Upload
others
View
1
Download
0
Embed Size (px)
Citation preview
NOACS for the treatment of atrial fibrillation - advantages
Eli I. LevDirector, Interventional Cardiology Unit
Hasharon HospitalRabin Medical Center
Tel-Aviv University, Israel
NOACS - Advantages
Pahrmacological properties
No need for monitoring
Efficacy
Safety
Absorption and metabolism of NOACs
Dabigatran Apixaban Edoxaban * Rivaroxaban
Bioavailability 3-7% 50% 62%66% (w/o food)
~100% with food
Prodrug yes no no no
Renal Clearance 80% 27% 50% 35%
Liver metabolism:
CYP3A4 no
yes (elimination;
minor CYP3A4)
minimal (<4%
of elimination)yes (elimination)
Absorption
with foodno effect no effect 6-22% more +39%
T Max 0.5 – 2 hrs 3 -4 hrs 2 – 4hrs 2 -4 hrs
Elimination
half-life (t1/2)12-14 hrs 12 hrs 9-11 hrs
5-9 h (young) /
11-13 h (elderly)
www.escardio.org/EHRA
* not approved yet
37-89 hrs
24-72 hrs
Warfarin
Warfarin metabolism
An anticoagulation effect generally occurs within 24 hrs
after warfarin administration. However, peak
anticoagulant effect may be delayed 72 to 96 hrs
The elimination of warfarin is almost entirely by hepatic
metabolism. The CYP450 isozymes involved in the
metabolism of warfarin include CYP2C9, 2C19, 2C8,
2C18, 1A2, and 3A4
The terminal half-life of warfarin after a single dose is ≈
1 week; however, the effective excretion half-life of
warfarin ranges from 37 to 89 hrs
Drug and food interactions of warfarin
Enzyme Inhibitors Inducers
CYP2C9
amiodarone, capecitabine, cotrimoxazole,
etravirine, fluconazole, fluvastatin,
fluvoxamine, metronidazole, miconazole,
oxandrolone, sulfinpyrazone, tigecycline,
voriconazole, zafirlukast
aprepitant, bosentan,
carbamazepine,
phenobarbital,
rifampin
CYP1A2
acyclovir, allopurinol, caffeine, cimetidine,
ciprofloxacin, disulfiram, enoxacin,
famotidine, fluvoxamine, methoxsalen,
mexiletine, norfloxacin, oral contraceptives,
phenylpropanolamine, propafenone,
propranolol, terbinafine, thiabendazole,
ticlopidine, verapamil, zileuton
montelukast,
moricizine,
omeprazole,
phenobarbital,
phenytoin, cigarette
smoking
CYP3A4
alprazolam, amiodarone, amlodipine,
amprenavir, aprepitant, atorvastatin,
atazanavir, bicalutamide, cilostazol,
cimetidine, ciprofloxacin, clarithromycin,
conivaptan, cyclosporine,
darunavir/ritonavir, diltiazem, erythromycin,
fluconazole, fluoxetine, fluvoxamine,
fosamprenavir, imatinib, indinavir, isoniazid,
itraconazole, ketoconazole, lopinavir/
ritonavir, nefazodone, nelfinavir, nilotinib,
oral contraceptives, posaconazole, ranitidine,
ranolazine, ritonavir, saquinavir,
telithromycin, tipranavir, voriconazole,
zileuton
armodafinil,
amprenavir,
aprepitant, bosentan,
carbamazepine,
efavirenz, etravirine,
modafinil, nafcillin,
phenytoin,
pioglitazone,
prednisone, rifampin
CYP450 interactions with warfarin
Other classes of interacting
drugs:
Antibiotics
Antifungals
Anticoagulants
Antiplatelets
NSAIDS
Serotonin reuptake inhibitors
Botanical products
Foods
INR control with warfarin:
clinical trials vs. clinical practiceINR* control in clinical trial versus clinical practice (TTR**)
1. Kalra L, et al. BMJ 2000;320:1236-1239 * Pooled data: up to 83% to 71% in individualized trials; 2. Samsa GP, et al. Arch Int Med 2000
3. Matchar DB, et al. Am J Med 2002; 113:42-51.
** TTR = Time in Therapeutic Range (INR2.0-3.0)
66%
44%
9%
18%
38%
25%
<2.0 2.0 – 3.0 >3.0 INR
% o
f el
igib
le p
atie
nts
rec
eivin
g
war
fari
n
Clinical trial1
Clinical practice2,3
*INR = International normalized ratio
VKAs have a narrow therapeutic window
ACC/AHA/ESC guidelines: Fuster V et al. Circulation 2006;114:e257–354& Eur Heart J 2006;27:1979–2030
1
International normalized ratio
Odds
ratio
2
15
8
10
5
0
1
3 4 5 6 7
Stroke
Intracranial bleed
Therapeuticrange
20
VKAs = vitamin K antagonists
NOACs Drug Interactions
All 3 NOACs with antifungals
Dabigatran – dronedarone, verapamil (moderate)
Apixaban, rivaroxaban – HIV protease inhibitors
All 3 NOACs – rifampin, phenytoin, phenobarbital
Pharmacological advantages of
NOACs
More predictable and shorter onset time and
half-life/elimination
Fewer food and drug interactions
Predictable effect without need for monitoring
US Department of Defense (October 28, 2010, and June 30, 2012)
Newly diagnosed NVAF patients on Dabigatran (n=1745)
Newly diagnosed NVAF patients on Warfarin (n=1745)
Persistence rates were higher for dabigatran than for warfarin
Persistence Rates Higher With
Dabigatran Than Warfarin
Kaplan–Meier survival curves for propensity scores matched patients by treatment group analyzed with a 60-day medication gap
Zalesak M, et al. Circ Cardiovasc Qual Outcomes 2013;6:567-574.
At 6 months: 72% versus 53%
At 1 year: 63% versus 39%
Higher persistence rates with
Dabigatran than warfarin
EFFICACY
Primary endpoint of stroke or systemic embolism
Patients with atrial fibrillation (non-valvular)
RELY: Stroke or Systemic Embolism
0.50 0.75 1.00 1.25 1.50
Dabigatran 110 vs. Warfarin
Dabigatran 150 vs. Warfarin
Non-inferiorityp-value
<0.001
<0.001
Superiorityp-value
0.34
<0.001
Margin = 1.46
HR (95% CI)Warfarin betterDabigatran better
Connolly et al NEJM 2009
0.01
0.02
0.03
0.05
0.04
Cu
mu
lati
ve h
azard
rate
s
RR 0.91
(95% CI: 0.74–1.11)
p<0.001 (NI)
p=0.34 (Sup)
RR 0.66
(95% CI: 0.53–0.82)
p<0.001 (NI)
p<0.001 (Sup)
Years
0 0.5 1.0 1.5 2.0 2.5
0.0
Warfarin
Dabigatran etexilate 110 mg
Dabigatran etexilate 150 mg
RR, relative risk; CI, confidence interval; NI, non-inferior; Sup, superior
Time to first stroke / SSE
Connolly SJ., et al. NEJM published online on Aug 30th 2009.
DOI 10.1056/NEJMoa0905561
RRR
34%
Connolly et al NEJM 2009
3.75 3.64
4.13
0.00
1.00
2.00
3.00
4.00
D110 mg BID D150 mg BID Warfarin
RR 0.88 (95% CI: 0.77–1.00)
p=0.051
RELY - All cause mortality
Connolly SJ., et al. NEJM published online on Aug 30th 2009.
DOI 10.1056/NEJMoa0905561
RR 0.91 (95% CI: 0.80–1.03)
p=0.13
446 / 6,015 438 / 6,076
% p
er
year
ROCKET AF Primary Efficacy OutcomeStroke and non-CNS Embolism
Event Rates are per 100 patient-years
Based on Protocol Compliant on Treatment Population
0
1
2
3
4
5
6
0 120 240 360 480 600 720 840 960
No. at risk:
Rivaroxaban 6958 6211 5786 5468 4406 3407 2472 1496 634
Warfarin 7004 6327 5911 5542 4461 3478 2539 1538 655
Warfarin
HR (95% CI): 0.79 (0.66, 0.96)
P-value Non-Inferiority: <0.001
Days from Randomization
Cu
mu
lati
ve e
ven
t ra
te (
%)
Rivaroxaban
Rivaroxaban Warfarin
Event
Rate1.71 2.16
Patel et al, NEJM 2011
Rivaroxaban Warfarin
Event
Rate
Event
Rate
HR
(95% CI)P-value
On
TreatmentN= 14,143
1.70 2.150.79
(0.65,0.95)0.015
ITTN= 14,171
2.12 2.420.88
(0.74,1.03)0.117
Rivaroxaban
better
Warfarin
better
Primary Efficacy Outcome - SuperiorityStroke and non-CNS Embolism
Event Rates are per 100 patient-years
Based on Safety on Treatment or Intention-to-Treat thru Site Notification populations Patel et al, NEJM 2011
ARISTOTLE - Primary OutcomeStroke (ischemic or hemorrhagic) or systemic embolism
Apixaban 212 patients, 1.27% per year
Warfarin 265 patients, 1.60% per year
HR 0.79 (95% CI, 0.66–0.95); P (superiority)=0.011
No. at Risk
Apixaban 9120 8726 8440 6051 3464 1754
Warfarin 9081 8620 8301 5972 3405 1768
P (non-inferiority)<0.001
21% RRR
Granger et al, NEJM 2011
ARISTOTLE: all-cause mortality
Granger et al. N Engl J Med 2011;365:981-92.
All-cause mortality*
3.94%669/9081 3.52%
603/9120
11% RRR HR: 0.89
95% CI: 0.80-0.998;
p=0.047
Warfarin Apixaban
Even
t ra
te (
% /
year)
*Key secondary efficacy endpoint
Comparative Efficacy / Safety among Trials
Subgroup of patients with CHADS2 > 3
SAFETY
Major Bleeding
Intra-cranial hemorrhage
RELY - Major bleeding rates
2.71
3.11
3.36
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
D110 mg BID D150 mg BID Warfarin
Connolly SJ., et al. NEJM published online on Aug 30th 2009.
DOI 10.1056/NEJMoa0905561
RR 0.93 (95% CI: 0.81–1.07)
p=0.31
RR 0.80 (95% CI: 0.69–0.93)
p=0.003 (sup)
322 / 6,015 375 / 6,076 397 / 6,022
RRR
20%
% p
er
year
Connolly et al NEJM 2009
RR 0.26 (95% CI: 0.14–0.49)
p<0.001 (sup)
RELY - Hemorrhagic stroke
Connolly SJ., et al. NEJM published online on Aug 30th 2009.
DOI 10.1056/NEJMoa0905561
RR 0.31 (95% CI: 0.17–0.56)
p<0.001 (sup)
Nu
mb
er
of
even
ts
6,015 6,076 6,022
1412
45
0
10
20
30
40
50
D110 mg BID D150 mg BID Warfarin
0.10%
0.38%RRR
69%
RRR
74%
0.12%
Connolly et al NEJM 2009
Intra-cranial bleeding rates
27
36
87
0
10
20
30
40
50
60
70
80
90
D110 mg BID D150 mg BID Warfarin
RR 0.40 (95% CI: 0.27–0.60)
p<0.001 (sup)
Connolly SJ., et al. NEJM published online on Aug 30th 2009.
DOI 10.1056/NEJMoa0905561
RR 0.31 (95% CI: 0.20–0.47)
p<0.001 (sup)
Nu
mb
er
of
even
ts
0,23 %
0,74 %
0,30 %
RRR
69%
RRR
60%
Connolly et al NEJM 2009
Rivaroxaban Warfarin
Event Rate
or N (Rate)
Event Rate
or N (Rate)
HR
(95% CI)
P-
value
Major
>2 g/dL Hgb drop
Transfusion (> 2 units)
Critical organ bleeding
Bleeding causing death
3.60
2.77
1.65
0.82
0.24
3.45
2.26
1.32
1.18
0.48
1.04 (0.90, 1.20)
1.22 (1.03, 1.44)
1.25 (1.01, 1.55)
0.69 (0.53, 0.91)
0.50 (0.31, 0.79)
0.576
0.019
0.044
0.007
0.003
Intracranial Hemorrhage 55 (0.49) 84 (0.74) 0.67 (0.47, 0.94) 0.019
Intraparenchymal 37 (0.33) 56 (0.49) 0.67 (0.44, 1.02) 0.060
Subdural 14 (0.13) 27 (0.27) 0.53 (0.28, 1.00) 0.051
Event Rates are per 100 patient-years
Based on Safety on Treatment Population
ROCKET-AF - Primary Safety Outcomes
Patel et al, NEJM 2011
ROCKET-AF - Primary Safety Outcomes
Rivaroxaban Warfarin
Event Rate Event Rate HR
(95% CI)
P-
value
Major and non-major
Clinically Relevant14.91 14.52 1.03 (0.96, 1.11) 0.442
Major 3.60 3.45 1.04 (0.90, 1.20) 0.576
Non-major Clinically
Relevant11.80 11.37 1.04 (0.96, 1.13) 0.345
Event Rates are per 100 patient-years
Based on Safety on Treatment Population Patel et al, NEJM 2011
ARISTOTLE - Major BleedingISTH definition
Apixaban 327 patients, 2.13% per year
Warfarin 462 patients, 3.09% per year
HR 0.69 (95% CI, 0.60–0.80); P<0.001
No. at Risk
Apixaban 9088 8103 7564 5365 3048 1515
Warfarin 9052 7910 7335 5196 2956 1491
31% RRR
Granger et al, NEJM 2011
Significant decrease also for intracranial bleeding: 0.33% vs. 0.8% / year (apixa vs. warfarin)
ARISTOTLE – Bleeding Outcomes
Outcome
Apixaban
(N=9088)
Warfarin
(N=9052)HR (95% CI) P Value
Event Rate
(%/yr)
Event Rate
(%/yr)
Primary safety outcome:
ISTH major bleeding*2.13 3.09 0.69 (0.60, 0.80) <0.001
Intracranial 0.33 0.80 0.42 (0.30, 0.58) <0.001
Hemorrhagic stroke 0.24 0.47 0.51 (0.35, 0.75) <0.001
Gastrointestinal 0.76 0.86 0.89 (0.70, 1.15) 0.37
Major or clinically relevant
non-major bleeding4.07 6.01 0.68 (0.61, 0.75) <0.001
GUSTO severe bleeding 0.52 1.13 0.46 (0.35, 0.60) <0.001
TIMI major bleeding 0.96 1.69 0.57 (0.46, 0.70) <0.001
Any bleeding 18.1 25.8 0.71 (0.68, 0.75) <0.001
Comparative analysis – trial results
Efficacy endpoint Safety endpoint
ESC working group on thrombosis, JACC 2012
Relative Risk: NOACs vs. Warfarin: Meta-analysis of > 50,000 patients
Dentali et al. Circulation 2013
0.89
0.77
0.46
0.86
1
Mortality Stroke/SE ICH Maj. Bleed MI
* *
*Some heterogeneity in results for major bleeding and myocardial infarction
Death Within 30 days of Major Bleed
Time (months from enrolment)Hylek et al, JACC 2014
Majeed et al,
Circulation 2013
NOACS Antidote status
All 3 NOACS have antidotes tested in phase 2
studies
“A phase 3 study designed to test an antidote to factor Xa
inhibitors met its primary efficacy end point, according to
an announcement from Portola Pharmaceuticals]”
(Theheart Oct. 2014)
“An IV bolus of andexanet alfa immediately and sig. reversed
the anticoagulation of apixaban in the ANNEXA-A study.
33 healthy volunteers in the study were treated with apixaban
5 mg bid daily for 4 days and then randomized to andexanet
alfa 400 mg or placebo” (results will be presented in AHA 2014)
NOACS – Advantages Summary
Pahrmac. properties - more predictable and shorter onset
time and elimination t1/2 ; No need for monitoring
Efficacy – all 3 NOACS are at least as effective as
warfarin in prevention of stroke and systemic embolism
(dabigatran 150 mg and apixaban more effective)
Safety - all 3 NOACS are at least as safe as warfarin in
terms of the risk of major bleeding (dabigatran 110 mg and
apixaban associated with lower rates of major bleeding).
All 3 NOACs associated with ↓ risk of intra-cranial bleeding
ESC Atr Fib 2012 Guidelines
line: solid = best option ; dashed = alternative option
Yes
Atrial fibrillation
Valvular AF*
<65 years and lone AF (including females)
Assess risk of stroke
CHA2DS2-VASc score
Assess bleeding risk
(HAS-BLED score)
Consider patient values and preferences
No antithrombotic
therapy
Oral anticoagulant therapy
NOAC VKA
0 1
No (i.e. nonvalvular)
Yes
No
≥2
Choice of anticoagulant
THANK YOU
New
anticoagulants
site of action
RE-LY: A Non-inferiority Trial
Atrial fibrillation
≥1 Risk Factor
Absence of contra-indications
R
Warfarin
adjusted
(INR 2.0-3.0)
N=6000
Dabigatran
Etexilate
110 mg BID
N=6000
Dabigatran
Etexilate
150 mg BID
N=6000
Blinded Event Adjudication.
Open Blinded
Mean TTR = 64%
Median follow up = 2 years
Mean CHADS score = 2.1
Connolly et al NEJM 2009
Rivaroxaban Warfarin
Primary Endpoint: Stroke or non-CNS Systemic Embolism
INR target - 2.5
(2.0-3.0 inclusive)
20 mg daily15 mg for Cr Cl 30-49 ml/min
Atrial Fibrillation
Randomize
Double Blind /
Double Dummy
(n ~ 14,000)
Monthly Monitoring
Adherence to standard of care guidelines
ROCKET AF - Study Design
* Enrollment of patients without prior Stroke, TIA or systemic embolism and only 2 factors capped at 10%
Risk Factors• CHF • Hypertension • Age 75 • Diabetes OR• Stroke, TIA or
Systemic embolus
At least 2 or
3 required*
mean TTR = 55%
Mean CHADS score = 3.5
Patel et al, NEJM 2011
Warfarin (target INR 2-3)
Apixaban 5 mg oral twice daily(2.5 mg BID in selected patients)
Primary outcome: stroke or systemic embolism
Randomize
double blind,
double dummy
(n = 18,201)
Inclusion risk factors
Age ≥ 75 years
Prior stroke, TIA, or SE
HF or LVEF ≤ 40%
Diabetes mellitus
Hypertension
Warfarin/warfarin placebo adjusted by INR/sham INR
based on encrypted point-of-care testing device
Major exclusion criteria
Mechanical prosthetic valve
Severe renal insufficiency
Need for aspirin plus thienopyridine
ARISTOTLEAF with at least one risk factor for stroke
Mean CHADS score = 2.1
mean TTR = 62%
Granger et al, NEJM 2011
AVERROES: Study Design
The primary objective of the trial was to determine if apixaban was superior to ASA
for the prevention of the composite outcome of stroke or systemic embolism.
• Primary efficacy outcome: Stroke or systemic embolism
• Primary safety outcome: Major bleeding
Connolly et al. N Engl J Med 2011;364:806-817.
Apixaban 5.0 mg BD
(2.5 mg in select patients* [6.4%])
ASA 81-324 mg OD**
Event Driven
N=5599
*Patients with ≥2 of the following: age ≥80 years, weight ≤60 kg, serum creatinine ≥1.5 mg/dL (133 μmol/L).
**The selection of an ASA dose of 81, 162, 243, or 324 mg was at the discretion of the investigator
with 91% of subjects receiving either an 81-mg (64%) or 162-mg (27%) dose at randomization.
Randomised, double-blind,
double-dummy
Patient Population
Patients ≥50 years with NVAF and ≥1 risk factors for stroke
Not receiving VKA therapy (demonstrated or expected to be unsuitable for VKA)
Mean follow-up: 1.1 years
AVERROES: primary efficacy
endpoint: stroke or systemic embolismC
um
ula
tive H
azard
Connolly et al. N Engl J Med 2011;364:806-17.
Months
No. at Risk
Apixaban 2808 2758 2566 2125 1522 615
ASA 2791 2716 2530 2112 1543 628
Apixaban
ASA
0.00
0.01
0.02
0.03
0.04
0.05
0 3 6 9 12 18
55% RRR
HR 0.45 (95% CI: 0.32-0.62)
p<0.001 for superiority
AVERROES: Primary safety
endpoint – major bleeding
Connolly et al. N Engl J Med 2011;364:806-17.
No. at Risk
Apixaban 2808 2759 2566 2120 1521 622
ASA 2791 2738 2557 2140 1571 642
0 3 6 9 12 18
0.000
0.005
0.010
0.015
0.020C
um
ula
tive H
azard
Months
Apixaban ASA
HR 1.13 (95% CI: 0.74-1.75);
p=0.57
RECENT ANALYSES AND
POST MARKETING DATA
REGARDING DABIGATRAN
Published in NEJM (March 2013)
“FDA has not changed its recommendations regarding Pradaxa.
Pradaxa provides an important health benefit when used as directed”
“Bleeding rates associated with new use of Pradaxa do not appear to be
higher than bleeding rates associated with new use of warfarin, which is
consistent with observations from the RE-LY trial.”
“The incidence rate of gastrointestinal hemorrhage events per 100,000 days
at risk was 1.6 to 2.2 times higher for warfarin new users than for
Pradaxa new users, and the incidence rate of ICH events per 100,000 days
at risk was 2.1 to 3.0 times higher with warfarin than with Pradaxa.”
Data collected during the time period from Oct 2010 - Dec 2011
“Real Life” Safety with PradaxaActive surveillance system sponsored by the FDA: Safety Announcement 2/11/2012
46
The Committee found that the frequency of occurrence of fatal
bleedings with Pradaxa seen in post-marketing data was
significantly lower than what was observed in the clinical trials that
supported the authorisation of the medicine…
On the basis of the available evidence, the CHMP concluded that the
benefits of Pradaxa continue to outweigh its risks and that it
remains an important alternative to other blood-thinning agents.
EMA updates patient & prescriber information for Pradaxa
Myocardial ischaemic events subanalysis:
cardiac outcomes
There was a numerical imbalance in the rate of MI that was not
statistically significant for either dose of dabigatran vs warfarin
D110 = dabigatran 110 mg twice daily; D150 = dabigatran 150 mg twice daily; MI = myocardial infarction;
war = warfarin
Hohnloser SH et al. Circulation doi:10.1161/CIRCULATIONAHA.111.055970
Annual rate (%) D110 vs warfarin D150 vs warfarin
D110 D150 War HR (95% CI) P value HR (95% CI) P value
Total MI 0.82 0.81 0.64 1.29 (0.96–1.75) 0.09 1.27 (0.94–1.71)
0.12
Clinical MI 0.73 0.74 0.56 1.30 (0.95–1.80) 0.10 1.32 (0.96–1.81) 0.09
Silent MI 0.09 0.07 0.08 1.22 (0.50–2.93) 0.66 0.87 (0.34–2.27) 0.72
Fatal MI 0.13 0.11 0.10 1.32 (0.63–2.80) 0.46 1.06 (0.49–2.33) 0.88
47
RELY-ABLE
During 2.3 years of additional treatment after RE-LY®
(total f/u 4.3 years): results highly consistent with RE-LY:
Rates of stroke and major bleeding remain low on
dabigatran
There were no new safety signal observed during this
extended follow up period
Both doses have very low rates of haemorrhagic stroke
over 4+ years
With dabigatran 150, there is a lower rate of ischaemic
stroke but a higher rate of major bleeding
Both doses have similar mortalityConnolly SJ, et al. RELY-ABLE presented at
AHA 2012 Scientific Sessions,
CHADS2 score subgroup analysis:
stroke/systemic embolism
49
*P values for interaction; D = dabigatran
Oldgren J et al. Ann Int Med 2011;155:660−7
CHADS2
score
Annual rate (%)
D110 mg BID
D150 mg BID
Warfarin
0–1 1.06 0.65 1.08
2 1.45 0.84 1.38
3–6 2.12 1.88 2.73
P=0.84*
0.5 1.0 1.50 2.0
P=0.37*
0.5 1.0 1.50 2.0Favours dabigatran
Favours warfarin
Favours dabigatran
Favours warfarin
Dabigatran 110 mg BID vs warfarin
Dabigatran 150 mg BID vs warfarin
Benefits of dabigatran vs warfarin are independent of CHADS2 score
ARISTOTLE - Stroke/Systemic
Embolism, by CHADS and HASBLED
Lopes et al, Lancet 2012
ARISTOTLE - ISTH Major
Bleeding by CHADS and HASBLED
Lopes et al, Lancet 2012
ARISTOTLE - Mortality by
CHADS and HASBLED
Lopes et al, Lancet 2012
NOACs vs. warfarin in moderate CKD (eCrCl <50 ml/min)
Dabigatran is contraindicated in patients with severe renal impairment (CrCl<30 ml/min)
1. Connolly SJ, et al. N Engl J Med 2009; 361: 1139-1151; 2. Pradaxa® Product Information 4th edition revised, 2012;
3. Fox KAA, et al. Eur Heart J 2011; 32: 2387-2394; 4. Hohnloser SH, et al. Eur Heart J 2012; 33: 2821-2830.
HR (95% CI)
Dabigatran 110 mg BID1,2 0.89 (0.61-1.31)
Dabigatran 150 mg BID1,2 0.47 (0.30-0.74)
Rivaroxaban 15 mg QD3 0.86 (0.63-1.17)
Apixaban 2.5/5 mg BID4 0.79 (0.55-1.14)
0.50 0.75 1.00 1.25 1.50
HR (95% CI)
New Agent Better Warfarin Better
Stroke or Systemic Embolism
Dabigatran is contraindicated in patients with severe renal impairment (CrCl<30 ml/min)
1. Connolly SJ, et al. N Engl J Med 2009; 361: 1139-1151; 2. Pradaxa® Product Information 4th edition revised, 2012;
3. Fox KAA, et al. Eur Heart J 2011; 32: 2387-2394; 4. Hohnloser SH, et al. Eur Heart J 2012; 33: 2821-2830.
HR (95% CI)
Dabigatran 110 mg BID1,2 1.00 (0.77-1.29)
Dabigatran 150 mg BID1,2 0.94 (0.72-1.21)
Rivaroxaban 15 mg QD3 0.95 (0.72-1.26)
Apixaban 2.5/5 mg BID4 0.50 (0.38-0.66)
0.50 0.75 1.00 1.25 1.50
HR (95% CI)
New Agent Better Warfarin Better
Major bleeding
NOACs vs. warfarin in moderate CKD (eCrCl <50 ml/min)