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AAPS College (Toronto Canada)
Clinical Pharmacology and Safety Assessments Presented
by Carolina Hung Ho
Professor Dr Peivand Pirouzi
Peer-reviewed by TBD
May 05 2016
Proposed New Indication for
Itraconazole (Sporanoxreg) in
Treatment of Cancer
Outline
Introduction
Pharmacokinetics
Absorption
Distribution
Metabolism
Elimination
Pharmacodynamics
CYP-450-dependent Inhibition of
Ergosterol Synthesis
Drug and Drug Interactions
Drug and Food Interactions
Adverse Drug Reactions
Pharmacogenomics
Special Population
Proposed New Indication Anti-
Cancer Properties
Proposed Mechanisms for
Anti-cancer activity
Cyclodextrins
Challenges
Conclusions
References
Question Session
Introduction
Itraconazole (ITZ) is used to treat many fungal infections
Invented in 1984
Marketed under several brand names
Janssen Pharmaceuticals a subsidiary of Johnson amp Johnson is marketing the drug under the brand name Sporanoxreg
Available as
100 mg capsule
10 mgmL oral suspension
Prescription only
IV formulation is not available in the USA or CAD
DIN 02047454
(Canada 1993)
DIN 02231347
(Canada 1997)
Chemical Information
Proper name Itraconazole
A synthetic triazole derivative
Chemical name(plusmn)-cis-4-[4-[4-[4-[[2-(24-dichlorophenyl)-2-(1H-124-triazol-1- ylmethyl)-13-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]phenyl]-24-dihydro-2-(1-methylpropyl)-3H-124- triazol-3-one
Structural formula
Lipophilic molecule
pKa = 37
Log partition coefficient in octanolwater = 82
Figure 1 Chemical Structure of Itraconazole (Janssen 2015)
Approved Indications
SPORANOXreg capsules (100 mg)
1 Invasive and non-invasive pulmonary aspergillosis
2 Oral andor esophageal candidiasis
3 Chronic pulmonary histoplasmosis
4 Cutaneous and lymphatic sporotrichosis
5 Paracoccidioidomycosis
6 Chromomycosis
7 Blastomycosis
8 Dermatomycosis
9 Onychomycosis
Systemic fungal
infections
Topical fungal
infections
Approved Indications (Contrsquod)
Systemic fungal
infections
Topical fungal
infections
Fig 21 Photomicrograph
of Asperlligus fumigatusFig 22 Photomicrograph
of Candida albicans
Fig 23 Photomicrograph
of DermatocomysesFig 24 Onychomycosis
affects the nails
Approved Indications (Contrsquod)
SPORANOXreg oral solution (10 mg mL)
1 Oral andor esophageal candidiasis
bull SPORANOXreg is safe for use in normal predisposed or immunocompromised
adult patients (eg HIV-positive)
bull SPORANOXreg oral solution and SPORANOXreg capsules should not be used
interchangeably
bull For use in special populations see Special Populations
Pharmacokinetics
Absorption
Oral bioavailability of SPORANOXreg capsules is maximal when
taken immediately after a full meal (Added excipient sugar
spheres)
Oral bioavailability of SPORANOXreg oral solution is maximal
when taken without food (Added excipient hydroxypropyl-β-
cyclodextrin)
Table 1 Pharmacokinetic data on Itraconazole from a
randomized cross-over study on 7 healthy male subjects
following administration of an oral solution
Plasma clearance rate = 381 plusmn 95 mLmin
Volume of distribution = 796 plusmn 185 L
Oral bioavailability = 33 - 55 (variable)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Outline
Introduction
Pharmacokinetics
Absorption
Distribution
Metabolism
Elimination
Pharmacodynamics
CYP-450-dependent Inhibition of
Ergosterol Synthesis
Drug and Drug Interactions
Drug and Food Interactions
Adverse Drug Reactions
Pharmacogenomics
Special Population
Proposed New Indication Anti-
Cancer Properties
Proposed Mechanisms for
Anti-cancer activity
Cyclodextrins
Challenges
Conclusions
References
Question Session
Introduction
Itraconazole (ITZ) is used to treat many fungal infections
Invented in 1984
Marketed under several brand names
Janssen Pharmaceuticals a subsidiary of Johnson amp Johnson is marketing the drug under the brand name Sporanoxreg
Available as
100 mg capsule
10 mgmL oral suspension
Prescription only
IV formulation is not available in the USA or CAD
DIN 02047454
(Canada 1993)
DIN 02231347
(Canada 1997)
Chemical Information
Proper name Itraconazole
A synthetic triazole derivative
Chemical name(plusmn)-cis-4-[4-[4-[4-[[2-(24-dichlorophenyl)-2-(1H-124-triazol-1- ylmethyl)-13-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]phenyl]-24-dihydro-2-(1-methylpropyl)-3H-124- triazol-3-one
Structural formula
Lipophilic molecule
pKa = 37
Log partition coefficient in octanolwater = 82
Figure 1 Chemical Structure of Itraconazole (Janssen 2015)
Approved Indications
SPORANOXreg capsules (100 mg)
1 Invasive and non-invasive pulmonary aspergillosis
2 Oral andor esophageal candidiasis
3 Chronic pulmonary histoplasmosis
4 Cutaneous and lymphatic sporotrichosis
5 Paracoccidioidomycosis
6 Chromomycosis
7 Blastomycosis
8 Dermatomycosis
9 Onychomycosis
Systemic fungal
infections
Topical fungal
infections
Approved Indications (Contrsquod)
Systemic fungal
infections
Topical fungal
infections
Fig 21 Photomicrograph
of Asperlligus fumigatusFig 22 Photomicrograph
of Candida albicans
Fig 23 Photomicrograph
of DermatocomysesFig 24 Onychomycosis
affects the nails
Approved Indications (Contrsquod)
SPORANOXreg oral solution (10 mg mL)
1 Oral andor esophageal candidiasis
bull SPORANOXreg is safe for use in normal predisposed or immunocompromised
adult patients (eg HIV-positive)
bull SPORANOXreg oral solution and SPORANOXreg capsules should not be used
interchangeably
bull For use in special populations see Special Populations
Pharmacokinetics
Absorption
Oral bioavailability of SPORANOXreg capsules is maximal when
taken immediately after a full meal (Added excipient sugar
spheres)
Oral bioavailability of SPORANOXreg oral solution is maximal
when taken without food (Added excipient hydroxypropyl-β-
cyclodextrin)
Table 1 Pharmacokinetic data on Itraconazole from a
randomized cross-over study on 7 healthy male subjects
following administration of an oral solution
Plasma clearance rate = 381 plusmn 95 mLmin
Volume of distribution = 796 plusmn 185 L
Oral bioavailability = 33 - 55 (variable)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Introduction
Itraconazole (ITZ) is used to treat many fungal infections
Invented in 1984
Marketed under several brand names
Janssen Pharmaceuticals a subsidiary of Johnson amp Johnson is marketing the drug under the brand name Sporanoxreg
Available as
100 mg capsule
10 mgmL oral suspension
Prescription only
IV formulation is not available in the USA or CAD
DIN 02047454
(Canada 1993)
DIN 02231347
(Canada 1997)
Chemical Information
Proper name Itraconazole
A synthetic triazole derivative
Chemical name(plusmn)-cis-4-[4-[4-[4-[[2-(24-dichlorophenyl)-2-(1H-124-triazol-1- ylmethyl)-13-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]phenyl]-24-dihydro-2-(1-methylpropyl)-3H-124- triazol-3-one
Structural formula
Lipophilic molecule
pKa = 37
Log partition coefficient in octanolwater = 82
Figure 1 Chemical Structure of Itraconazole (Janssen 2015)
Approved Indications
SPORANOXreg capsules (100 mg)
1 Invasive and non-invasive pulmonary aspergillosis
2 Oral andor esophageal candidiasis
3 Chronic pulmonary histoplasmosis
4 Cutaneous and lymphatic sporotrichosis
5 Paracoccidioidomycosis
6 Chromomycosis
7 Blastomycosis
8 Dermatomycosis
9 Onychomycosis
Systemic fungal
infections
Topical fungal
infections
Approved Indications (Contrsquod)
Systemic fungal
infections
Topical fungal
infections
Fig 21 Photomicrograph
of Asperlligus fumigatusFig 22 Photomicrograph
of Candida albicans
Fig 23 Photomicrograph
of DermatocomysesFig 24 Onychomycosis
affects the nails
Approved Indications (Contrsquod)
SPORANOXreg oral solution (10 mg mL)
1 Oral andor esophageal candidiasis
bull SPORANOXreg is safe for use in normal predisposed or immunocompromised
adult patients (eg HIV-positive)
bull SPORANOXreg oral solution and SPORANOXreg capsules should not be used
interchangeably
bull For use in special populations see Special Populations
Pharmacokinetics
Absorption
Oral bioavailability of SPORANOXreg capsules is maximal when
taken immediately after a full meal (Added excipient sugar
spheres)
Oral bioavailability of SPORANOXreg oral solution is maximal
when taken without food (Added excipient hydroxypropyl-β-
cyclodextrin)
Table 1 Pharmacokinetic data on Itraconazole from a
randomized cross-over study on 7 healthy male subjects
following administration of an oral solution
Plasma clearance rate = 381 plusmn 95 mLmin
Volume of distribution = 796 plusmn 185 L
Oral bioavailability = 33 - 55 (variable)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Chemical Information
Proper name Itraconazole
A synthetic triazole derivative
Chemical name(plusmn)-cis-4-[4-[4-[4-[[2-(24-dichlorophenyl)-2-(1H-124-triazol-1- ylmethyl)-13-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]phenyl]-24-dihydro-2-(1-methylpropyl)-3H-124- triazol-3-one
Structural formula
Lipophilic molecule
pKa = 37
Log partition coefficient in octanolwater = 82
Figure 1 Chemical Structure of Itraconazole (Janssen 2015)
Approved Indications
SPORANOXreg capsules (100 mg)
1 Invasive and non-invasive pulmonary aspergillosis
2 Oral andor esophageal candidiasis
3 Chronic pulmonary histoplasmosis
4 Cutaneous and lymphatic sporotrichosis
5 Paracoccidioidomycosis
6 Chromomycosis
7 Blastomycosis
8 Dermatomycosis
9 Onychomycosis
Systemic fungal
infections
Topical fungal
infections
Approved Indications (Contrsquod)
Systemic fungal
infections
Topical fungal
infections
Fig 21 Photomicrograph
of Asperlligus fumigatusFig 22 Photomicrograph
of Candida albicans
Fig 23 Photomicrograph
of DermatocomysesFig 24 Onychomycosis
affects the nails
Approved Indications (Contrsquod)
SPORANOXreg oral solution (10 mg mL)
1 Oral andor esophageal candidiasis
bull SPORANOXreg is safe for use in normal predisposed or immunocompromised
adult patients (eg HIV-positive)
bull SPORANOXreg oral solution and SPORANOXreg capsules should not be used
interchangeably
bull For use in special populations see Special Populations
Pharmacokinetics
Absorption
Oral bioavailability of SPORANOXreg capsules is maximal when
taken immediately after a full meal (Added excipient sugar
spheres)
Oral bioavailability of SPORANOXreg oral solution is maximal
when taken without food (Added excipient hydroxypropyl-β-
cyclodextrin)
Table 1 Pharmacokinetic data on Itraconazole from a
randomized cross-over study on 7 healthy male subjects
following administration of an oral solution
Plasma clearance rate = 381 plusmn 95 mLmin
Volume of distribution = 796 plusmn 185 L
Oral bioavailability = 33 - 55 (variable)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Approved Indications
SPORANOXreg capsules (100 mg)
1 Invasive and non-invasive pulmonary aspergillosis
2 Oral andor esophageal candidiasis
3 Chronic pulmonary histoplasmosis
4 Cutaneous and lymphatic sporotrichosis
5 Paracoccidioidomycosis
6 Chromomycosis
7 Blastomycosis
8 Dermatomycosis
9 Onychomycosis
Systemic fungal
infections
Topical fungal
infections
Approved Indications (Contrsquod)
Systemic fungal
infections
Topical fungal
infections
Fig 21 Photomicrograph
of Asperlligus fumigatusFig 22 Photomicrograph
of Candida albicans
Fig 23 Photomicrograph
of DermatocomysesFig 24 Onychomycosis
affects the nails
Approved Indications (Contrsquod)
SPORANOXreg oral solution (10 mg mL)
1 Oral andor esophageal candidiasis
bull SPORANOXreg is safe for use in normal predisposed or immunocompromised
adult patients (eg HIV-positive)
bull SPORANOXreg oral solution and SPORANOXreg capsules should not be used
interchangeably
bull For use in special populations see Special Populations
Pharmacokinetics
Absorption
Oral bioavailability of SPORANOXreg capsules is maximal when
taken immediately after a full meal (Added excipient sugar
spheres)
Oral bioavailability of SPORANOXreg oral solution is maximal
when taken without food (Added excipient hydroxypropyl-β-
cyclodextrin)
Table 1 Pharmacokinetic data on Itraconazole from a
randomized cross-over study on 7 healthy male subjects
following administration of an oral solution
Plasma clearance rate = 381 plusmn 95 mLmin
Volume of distribution = 796 plusmn 185 L
Oral bioavailability = 33 - 55 (variable)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Approved Indications (Contrsquod)
Systemic fungal
infections
Topical fungal
infections
Fig 21 Photomicrograph
of Asperlligus fumigatusFig 22 Photomicrograph
of Candida albicans
Fig 23 Photomicrograph
of DermatocomysesFig 24 Onychomycosis
affects the nails
Approved Indications (Contrsquod)
SPORANOXreg oral solution (10 mg mL)
1 Oral andor esophageal candidiasis
bull SPORANOXreg is safe for use in normal predisposed or immunocompromised
adult patients (eg HIV-positive)
bull SPORANOXreg oral solution and SPORANOXreg capsules should not be used
interchangeably
bull For use in special populations see Special Populations
Pharmacokinetics
Absorption
Oral bioavailability of SPORANOXreg capsules is maximal when
taken immediately after a full meal (Added excipient sugar
spheres)
Oral bioavailability of SPORANOXreg oral solution is maximal
when taken without food (Added excipient hydroxypropyl-β-
cyclodextrin)
Table 1 Pharmacokinetic data on Itraconazole from a
randomized cross-over study on 7 healthy male subjects
following administration of an oral solution
Plasma clearance rate = 381 plusmn 95 mLmin
Volume of distribution = 796 plusmn 185 L
Oral bioavailability = 33 - 55 (variable)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Approved Indications (Contrsquod)
SPORANOXreg oral solution (10 mg mL)
1 Oral andor esophageal candidiasis
bull SPORANOXreg is safe for use in normal predisposed or immunocompromised
adult patients (eg HIV-positive)
bull SPORANOXreg oral solution and SPORANOXreg capsules should not be used
interchangeably
bull For use in special populations see Special Populations
Pharmacokinetics
Absorption
Oral bioavailability of SPORANOXreg capsules is maximal when
taken immediately after a full meal (Added excipient sugar
spheres)
Oral bioavailability of SPORANOXreg oral solution is maximal
when taken without food (Added excipient hydroxypropyl-β-
cyclodextrin)
Table 1 Pharmacokinetic data on Itraconazole from a
randomized cross-over study on 7 healthy male subjects
following administration of an oral solution
Plasma clearance rate = 381 plusmn 95 mLmin
Volume of distribution = 796 plusmn 185 L
Oral bioavailability = 33 - 55 (variable)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacokinetics
Absorption
Oral bioavailability of SPORANOXreg capsules is maximal when
taken immediately after a full meal (Added excipient sugar
spheres)
Oral bioavailability of SPORANOXreg oral solution is maximal
when taken without food (Added excipient hydroxypropyl-β-
cyclodextrin)
Table 1 Pharmacokinetic data on Itraconazole from a
randomized cross-over study on 7 healthy male subjects
following administration of an oral solution
Plasma clearance rate = 381 plusmn 95 mLmin
Volume of distribution = 796 plusmn 185 L
Oral bioavailability = 33 - 55 (variable)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacokinetics
Absorption
ITZ exposure is lower with the capsule
formulation than with the oral solution when
the same dose of drug is given
Gastric acidity = Absorption
Can be caused by medications (eg H2
receptor agonists and proton pump inhibitors)
Can be caused by certain diseases (eg
achlorhydria)
Non-diet Cola can help to absorb ITZ
under fasted conditions
Fig 3 Bioavailability of
itraconazole in two capsule
and one oral formulation
among 60 healthy volunteers
(Barone et al 1998)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacokinetics (Contrsquod)
Distribution
The plasma protein binding of ITZ is 998 and that of
hydroxy-ITZ is 995
ITZ is extensively distributed into tissues which are
prone to fungal infection
Lung
Kidney
Bones
Stomach
Spleen
Muscle
Skin Cskin is 5X higher than Cplasma
Ctissues is 2X times than Cplasma
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacokinetics (Contrsquod)
Metabolism
Extensive metabolism by the liver
Major enzyme CYP 3A4
Main metabolite Hydroxy-itraconazole (OH-ITZ)
Same antifungal effect efficacy maintained
Present 3x higher in the tissues (HPLC)
Shorter T12 of elimination
gt 30 other metabolic pathways involved
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacokinetics (Contrsquod)
Hydroxylation ndash adding ndashOH
Reaction By CYP 3A4-body attempt to make compound
more polar for conjugation and
easier to eliminate
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacokinetics (Contrsquod)
Elimination
The feces (18 as active drug 54 as inactive
metabolites )
Active transport in the bile
Using oral radiolabelled dose to track its fate
The urine (lt 003 active drug 35 as inactive
metabolites)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacokinetics (Contrsquod)
Fig 5 The fate of Itraconazole in the human
body
Half-Life (T12) Elimination
Single dose 16 to 28 hours
Multiple doses 34 to 42
hours
Cirrhotic (single dose) 37
hours
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Mode of Action
ITZ Inhibits P450 lanosterol 14-demethylase
Enzyme responsible for converting lanosterol ergosterol
Ergosterol is needed for cell membrane fluidity amp stability
Without ergosterol cell membrane is disrupted
Fungi are unable to grow and divide
Fig 6 Structure of P450
lanosterol 14-demythalase
(Podul et al)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Mode of Action
Fig 7 Cell membrane and cell wall structure of a fungal cell
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Drug-Drug Interactions
ITZ (and its metabolites) are potent CYP 3A4 inhibitors
By competing with other substrates for CYP 3A4 binding sites in
liver hepatocytes
ITZ is a potent P-glycoprotein (P-gp) inhibitor
By competing with other substrates for P-g binding sites in the
liver kidney endothelium and brain
Pg is responsible for active transport drugs back into the gut
lumen or into the bile
RESULT May alter Cp of other drugs or other drugs
may alter Cp of ITZ
Prolonged therapeutic effects or overdose of these drugs
Therefore many drugs are contraindicated with SPORANOXreg
a long list
eg ITZ may
elevate morphine
plasma
concentrations
possibly by
inhibiting P-g
elimination of
morphine into gut
lumen
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Drug Contraindications
Refer to Product Monograph for Itraconazole for a
list of contraindicated medications
bull CONTRAINDICATED (Table 1)
bull May increase risks of serious cardiovascular events (eg
QT prolongation Torsade de pointes bleeding etc)
bull NOT RECOMMENDED (Table 2)
bull If co-administration cannot be avoided consider monitoring
signs symptoms plasma levels of ITZ dose adjustment
etc
bull USE WITH CAUTION (Table 3)
bull Interaction is not well established
bull Monitoring required
bull Special populations
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Food-Drug Interactions
Grapefruit juice is also a CYP 3A4
inhibitor
The culprit furanocomarins
It may
1 May reduce or raise Cp of ITZ
2
Therefore grapefruit juice is NOT
recommended when taking
SPORANOXreg
Fig 8 Furanocomarin
in Grapefruit juice
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Adverse Reactions
Rare and serious Hepatotoxivity Acute liver
failure and death
Common ADRs GI origin (dyspepsia nausea
vomiting diarrhea abdominal pain and constipation)
Overdosage No experience with overdosage
If suspected treated with activated charcoal
ITZ cannot be removed through hemodialysis
Other toxicity
Mutagenicity NO
Teratogenicity NO
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacodynamics
In vitro studies (cultured cells)
[ITZ] = 4 x 10-7M 50 inhibition of cholesterol biosynthesis in human lymphocytes
[ITZ] = 4 x 10-5M 50 inhibition of ergosterol in Candida albicanscells
Point 1 ITZ is selectively toxic to fungal cells
Phase I (healthy volunteers)
100 mg ITZ od for 1 month no difference in basal serum cholesterol levels between control and treatment groups
50 - 400 mg ITZ od for max 2 years basal serum cholesterol were not significantly affected in 3 studies
Point 2 Short and long-term exposure to ITZ does not significantly affect cholesterol levels in human
Note
Your Total Blood (or
Serum) Cholesterol
Your total cholesterol
score is calculated by
the following equation
HDL + LDL + 20 of
your triglyceride level A
total cholesterol score
of less than 180 mgdL
is considered optimal
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacodynamics
Phase I (healthy volunteers)
100 mg or 200 mg daily for 1 month no significant change in hormone levels
CNS (eg LH FSH prolactin)
Reproductive organs (eg estrogen testosterone)
Adrenal gland (eg cortisol)
Point 3 ITZ does not cross BBB into cerebrospinal fluid (cannot reach your brain)
200 mg daily for 5 weeks no significant effect on the HR BP ECG-intervals in health volunteers
Point 4 ITZ does not affect the cardiovascular system
200 mg daily for 5 weeks no negative effect on immune functions Values for OKT4 positive lymphocyte showed a significant shift from 42 plusmn 33 to 53 plusmn33 This increase as well as shifts in the other immunological parameters remained within the normal ranges
Point 5 ITZ does not affect immune system
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacodynamics
In summary
Safe for human does not affect cholesterol levels
Does not adversely affect the brain the heart or the immune system
directly Exception Rare cases of CHF
Precautions must be taken however when co-administered with
other medications and grapefruit juice
But what about the kidney and the liver
See ldquoWarnings and Precautionsrdquo
See ldquoDrug Interactionsrdquo
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Special Population
Geriatrics (gt 65 years of age)
Use caution
Use only when potential benefit outweighs the
potential risks
Pediatrics (lt 18 years of age)
The efficacy and safety of SPORANOXreg have not yet
been established
Use caution
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Special Population
Pregnant Women and Lactating Mothers
Should not be used if pregnant or planning pregnancy except for life-threatening cases where the potential benefit to the mother outweighs the potential harm to the fetus
For women of childbearing age SPORANOXreg should not be prescribed unless effective contraception methods are used prior to the start of therapy
Nursing Women
Itraconazole is excreted in human milk therefore the patient should be advised to discontinue nursing while taking SPORANOXreg
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Special Population
Impaired renal function
Limited data available Exercise caution
ITZ is mainly excreted through the feces so BA is slightly increased if kidney function is impaired
Impaired liver function
Limited data available Exercise caution
Cmax was reduced by 47 and resulted in a twofold increase in half-life (capsules)
ITZ is extensively metabolized by the liver so impaired liver function (eg cirrhosis liver failure) elevate BA of other drugs overdose + toxicity
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Pharmacodynamics (Contrsquod)
Efficacy amp Safety
Large Vdistrsquon
Long T12
Main metabolite works just as
well as the parent drug
Precaution taken with
Concomitant medications
Liver or kidney failure
History of CHF
Special populations
Fig 9 Plasma concentrations of
Itraconazole and its metabolite
hydroxyitraconazole
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Proposed New Indication for
Sporanoxreg
Fungal
Infections
Anti-Cancer
Drug
Current Indication Proposed Indication
Use as prophylactic agent
andor as part of
chemotherapy
Fights off infections caused
by many fungal species
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Why Choose Sporanoxreg
Shown to have anti-neoplastic effects in vitro and in vivo pre-clinical trials
2 Proposed Mechanisms
1 Block the angiogenesis pathway
2 Block the Hedgehog signaling pathway
Types of cells studied
Basal cell carcinoma
Non-small lung cancer cells
Prostrate cancer cells
Breast cancer cells
Long and well established safety profile
An affordable and accessible generic drug
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Why Choose Sporanoxreg
Phase II Trial
A Randomized Phase II Clinical Trial of Two Dose-levels of
Itraconazole in Patients With Metastatic Castration-resistant
Prostate Cancer
Identifier NCT00887458
Sponsor Johns Hopkins University
Collaborator Memorial Sloan Kettering Cancer Center
Start date July 2009
End date December 2013
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Phase II Study
Investigational drug Itraconazole
Condition Prostrate Cancer
Study type Efficacy
Duration 24 weeks (6 months)
N= 42 patients
Treatment
Group Treatment Total daily
dose
Low dose 200 mg by mouth once daily 200 mg
High dose 300 mg by mouth twice daily 600 mg
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Phase II Study (Contrsquod)
Results
1 Efficacy
PSA ndash Prostrate Specific Antigen are secreted by prostrate tumour cells serve as tumour markers
PSA progression is defined as a 25 increase in PSA over baseline or a 2 ngml increase when confirmed again 4 weeks later
Conclusion High dose ITZ (600mgday) significant PSA responses and delay in tumour progression
Group Total daily dose Subjects No PSA Progression at
24 weeks (95 CI)
Low dose 200 mg 17 11
High dose 600 mg 25 48
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Phase II Study (Contrsquod)
Results
2 Safety ndash Adverse Events
Type of AE AE Low dose High dose
Serious Fatigue 6 0
Other events (5) Hypertension
Anorexia
Fatigue
Hypokalemia
Rash
-
11
52
-
18
31
17
20
17
7
Limitations
Small sample size N=42 patients
Advanced stages of prostrate cancer
AEs ndash no causality established yet
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Anti-cancer Properties of
Itraconazole
Figure 10 Proposed Mechanisms for Anti-cancer activity1) Blocking the
Signal in the Hedgedog Pathway and 2) Blocks Angiogenesis (King 2015)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Blocking the Angiogenesis
Pathway Sporanoxreg
Angiogenesis describes the process why which new blood vessels grow
Cancer cells need blood vessels to grow and metastasize
Cancer cells grow their vessels by releasing angiogenic growth factor proteins (eg VEGH)
ITZ has been shown to block this pathway in cancer cell lines by inducing inhibitory factors
Hope to see that it can also stop cancer cells from growing vessels in humans
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Blocking the Angiogenesis
Pathway Sporanoxreg
Watch Video httpswwwyoutubecomwatchv=hVYdV3wKg-k
Fig 11
Angiogenesis
and Tumour
Metastasis The
search for
drugs that
inhibit this
hallmark of
cancer
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Figure 12
Itraconazole and
Itraconazole plus
Cisplatin (an
approved
chemotherapeutic
drug) has shown
significant
reduction in
endothelial cell
proliferation
migration and
tube formation in
response to
angiogenic
stimulation from
non-small cell
cancer lines
(Afba et al 2011)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
LINK httpswwwyoutubecomwatchv=gFWO3I-oqsE
Fig 13 The
hedgehog
signaling
pathway and
overstimulati
on in tumour
cells
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Blocking the Hedgehog Signaling
Pathway Sporanoxreg
Hedgehog signaling pathway is essential for
embryonic development remains active in adult
tissues
Involve proteins that control cell proliferation
differentiation and tissue patterning
Over-stimulation of this pathway has been linked to
cancer of the brain GI lung breast and prostrate
gland
ITZ has shown to inhibit this signaling pathway thus
slowing cancer progression
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Challenges for Sporanoxreg
Challenge 1 Varied bioavailability
Capsule 6-20
Oral Solution 20-60
2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
An excipient in oral solution and IV formulation
Used to improve water solubility rate of dissolution
and hence its bioavailability
By forming a complex with drug molecule
Lipophilic cavity ndash holds ITZ
Hydrophobic exterior
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Challenges for Sporanoxreg
Excipient 2-(HYDROXYPROPYL)-BETA-CYCLODEXTRIN
In the 1996 Horsky et al From National Institute of Health (NIH) indicated
that
ldquoHP-B-Cyclodextrin when used in pharmaceutical formulations has potential
to increase the absorption of carcinogens which enter the GI tract as food
components or from air pollutionrdquo
Note The author cautions against the use of very large quantities of the
substance because if it can enhance BA of a therapeutic drug it can also
provide the same service for harmful chemicals
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Challenges for Sporanoxreg
Safety
For oral high doses (gt 1000 mgkgday)
Diarrhea
Enlargement of faeces seen only in animals
For IV high doses
nephrotoxicity in animal studies seen only in animals
At present it is not required to add information on these excipients in the
package leaflet of medicinal products (European Union 2015)
The presence of cyclodextrins should always be stated as a precaution
because of limited information and possible interaction with
active substances
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Challenges for Sporanoxreg
Fig 14 Chemical structure of
hydroxypropyl-beta-cyclodextrin and
formation of inclusion complex with
lipophilic molecule such as ITZ
(European Union 2015)
Pharmacokinetic Properties of
Hydroxypropyl-beta-
cyclodextrin
Absorption Poor
Distribution
Bioavailability
None
0-3
Metabolism None
Excretion Oral ndash faeces
IV ndash kidney
GRAS ndash generally recognized as safe
Maximum Daily Intake 8000 mgday
Estimated Dose from Sporanox
~160 mgday
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Improving its Bioavailability
Nanosizing - to reduce the particle size of the ITZ to sub-micron range typically between 100-200nm to enhance its oral bioavailability
Mechanism Maximizing surface area to improve its dissolution rate which in turn enhances its bioavailability
Require the use of stabilizers (eg polymers)
Examples
1 High Pressure Homogeneous
2 Supercritical Fluid Process
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Improving its Bioavailability
Fig 15 Scanning electron
microscopy micrographs
of coarse itraconazole
powders (top) and
lyophilized intraconazole
nanocrystals by
homogenized high
pressure (Sun et al (2011)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Nanotechnology Enhancing
Bioavailability of Itraconazole
Figure 16 Using nanotechnology modify Itraconazole using silica into flakes The goal is to
increase the rate of dissolution of ITZ in the stomach thus increasing absorption rate by
the body
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions
with Other Anti-neoplastic Drugs
Antineoplastic
Drugs
Coadministration
with Sporanox
Clinical Comments
irinotecan CONTRAINDICATED The potential increase in plasma concentrations of irinotecan
when coadministered with SPORANOXreg may increase the risk of potentially fatal adverse
events
axitinib
dabrafenib
dasatinib
ibrutinib
nilotinib
sunitinib
trabectedin
May increase plasma
levels of these drugs 1113089
NOT RECOMMENDED It is recommended that the use of these drugs be avoided
during and up to 2 weeks after discontinuation of treatment with itraconazole unless the
benefits outweigh the potentially increased risks of side effects If coadministration cannot
be avoided clinical monitoring for signs or symptoms of increased or prolonged effects or
side effects of the interacting drug is recommended and its dosage be reduced or
interrupted as deemed necessary When appropriate it is recommended that plasma
concentrations be measured
bortezomib busulphan
docetaxel
erlotinib
gefitinib
imatinib
ixabepilone
lapatinib
ponatanib trimetrexate
vinca alkaloids
May increase plasma
levels of these drugs 1113089
USE WITH CAUTION Careful monitoring is recommended when these drugs are
coadministered with itraconazole Upon coadministration it is recommended that patients
be monitored closely for signs or symptoms of increased or prolonged effects or side
effects of the interacting drug and its dosage be reduced as deemed necessary When
appropriate it is recommended that plasma concentrations be measured See 3 above for
further information
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Challenges for Sporanoxreg
Challenge 2 Potential Drug to Drug Interactions with Anti-neoplastic Drugs
Antineoplatic Drugs Tested In-Vitro So Far
1 Pemetrexed
At 3 months 67 of the patients on itraconazole plus pemetrexed were progression-free versus 29 on the control arm of pemetrexed alone (p = 011) (Rudin et al 2013)
2 Cinsplastin
Itraconazole and Itraconazole plus Cisplatin has shown significant reduction in endothelial cell proliferation migration and tube formation in response to angiogenic stimulation from non-small cell cancer lines (Afba et al 2011)
Fig 17 Survival rate of small cancer
cell lines exposed to permetrexed +
itraconacole vs permetrexed alone
(Rudin et al 2013)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Positive Outlook
According to National Institute of Cancer Research
there are over 200 anticancer drugs availablehellip
ANDhellip
Itraconazole has been shown to have potential drug-to
drug interactions with only 20 or so of these drugs
There are still 180 drugs from which Itraconazole can be
integrated as a part for cancer chemotherapy
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Conclusions
ITZ should be further considered for its potential anticancer effects
Long record of safety
In-vitro and early phase clinical trials showcases consistent anti-cancer effects
But must take into consideration
Limited applicability in clinical practice due to its wide range of interactions with other drugs
Angiogenesis and Hedgehog signaling pathways are not well understood ndash more research
Explore alternatives for enhancing its availability
How to incorporate this new drug into a chemotherapy regime ndash Diarrhea is the common side effects
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
References
(2014) Background review for cyclodextrins used as excipients CPMP46300 Rev 1 European Medicines Agency httpwwwemaeuropaeudocsen_GBdocument_libraryReport201412WC500177936pdf
Barone J Moskovitz B Guarnieri B Hassell A Colaizzi J Bierman R amp Louis J (1998) Enhanced Bioavailability of Itraconazole in Hydroxypropylβ-Cyclodextrin Solution versus Capsules in Healthy Volunteers American Society of Microbiology 42 (7) 1862-1865
Carducci M (2014) A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy National Institute of Health Clinicaltrialsorg Identifier NCT00887458 httpsclinicaltrialsgovct2showresultsNCT00887458sect=X70156ampterm=sporanoxamprank=27outcome1
Diamond R (1999) Atlas of Fungal Infections Introduction to Medical Mycology Merck and Co
Du R Lu K V Petritsch C Liu P Ganss R Passegueacute E hellip Bergers G (2008) HIF1α Induces the Recruitment of Bone Marrow-Derived Vascular Modulatory Cells to Regulate Tumor Angiogenesis and Invasion Cancer Cell 13(3) 206ndash220 httpdoiorg101016jccr200801034
Horsky J Pitha J (1996) Hydroxypropyl cyclodextrins potential synergism with carcinogens Journal of Pharmaceutical Science 85(1) 96-100 httpwwwncbinlmnihgovpubmed8926593
McMillan R Matsui W (2012) Molecular Pathways The Hedgehog Signaling Pathway in Cancer American Association for Cancer Research 18(18) 4883ndash4888 httpclincancerresaacrjournalsorgcontent18184883fullpdf+html
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
References (Contrsquod)Nanonization of Itraconazole by High Pressure Homogenization Stabilizer Optimization Podust LM von Kries JP Eddine AN Kim Y
et al Small-Molecule Scaffolds for CYP51 Inhibitors Identified by High-Throughput Screening and Defined by X-ray
Crystallography Antimicrob Agents Chemother 2007 51(11) 3915-23
Pantziarka P Sukhatme V Bouche G Meheus L amp Sukhatme V P (2015) Repurposing Drugs in Oncology (ReDO)mdash
itraconazole as an anti-cancer agent Ecancermedicalscience 9 521 httpdoiorg103332ecancer2015521
Product Monograph PrSPORANOXreg itraconazole oral solution 10 mgmL Antifungal Agent (2015) Janssen Inc Extracted
from Health Canada Drug Directorate DIN number 02047454
Product Monograph PrSPORANOXreg itraconazole capsules 100 mg Antifungal Agent (2015) Janssen Inc Extracted from
Health Canada Drug Directorate DIN number 02231347
Rudin Charles M et al (2013) Phase 2 Study of Pemetrexed and Itraconazole as Second-Line Therapy for Metastatic
Nonsquamous NonndashSmall-Cell Lung Cancer Journal of Thoracic Oncology 8 (5) 619 ndash 623 httpwwwjtoorgarticleS1556-
0864(15)32820-3abstract
Stella V J He Q (2008) Cyclodextrins Toxicologic Pathology 36(1) 30-42
httptpxsagepubcomcontent36130long
Sun W Mao S Shi Y Li L Fang L (2011) Journal of Pharmaceutical Sciences 100 (8) 3365-3373
httpjpharmsciorgarticleS0022-3549(15)32030-Xpdf
Types of Fungal Diseases (2014 December 04) Retrieved April 04 2016 from httpwwwcdcgovfungaldiseasesindexhtml
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)
Thank You The statements opinions and data contained in this publication are
solely those of the individual Authors and contributors for academic
purposes and do not reflect the opinion of the company that markets
the product(s)