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Forward looking statements
ProQR Therapeutics - Corporate Presentation 2
This presentation contains forward-looking statements that involve
substantial risks and uncertainties. All statements, other than statements of
historical facts, contained in this presentation, including but not limited to,
statements regarding our strategy, future operations, future preclinical and
clinical trial plans and related timing of trials and results, regulatory pathway
and design of preclinical and clinical trials, research and development, the
potential of our technologies and platforms, including Axiomer ® and
Trident®, statements about our intellectual property rights, future financial
position and cash runway, future revenues, projected costs, prospects,
therapeutic potential of our product candidates, plans and objectives of
management, are forward-looking statements. The words “aim,”
“anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,”
“project,” “target,” “potential,” “will,” “would,” “could,” “should,” “continue,”
and similar expressions are intended to identify forward-looking statements,
although not all forward-looking statements contain these identifying words.
Forward-looking statements are based on management's beliefs and
assumptions and on information available to management only as of the
date of this presentation. Our actual results could differ materially from
those anticipated in these forward-looking statements for many reasons,
including, without limitation, the risks, uncertainties and other factors in our
filings made with the Securities and Exchange Commission, including certain
sections of our annual report filed on Form 20-F. These risks and
uncertainties include, among others, the cost, timing and results of
preclinical studies and clinical trials and other development activities by us
and our collaborative partners whose operations and activities may be
slowed or halted by the COVID-19 pandemic; the likelihood of our clinical
programs being executed on timelines provided and reliance on our
contract research organizations and predictability of timely enrollment of
subjects and patients to advance our clinical trials and maintain their own
operations; our reliance on contract manufacturers to supply materials for
research and development and the risk of supply interruption from a
contract manufacturer; the potential for future data to alter initial and
preliminary results of early-stage clinical trials; the unpredictability of the
duration and results of the regulatory review of applications or clearances
that are necessary to initiate and continue to advance and progress our
clinical programs; feedback and interactions with regulatory authorities with
respect to the design of our planned preclinical and clinical activities; the
ability to secure, maintain and realize the intended benefits of collaborations
with partners; the possible impairment of, inability to obtain, and costs to
obtain intellectual property rights; possible safety or efficacy concerns that
could emerge as new data are generated in research and development; and
general business, operational, financial and accounting risks, and risks
related to litigation and disputes with third parties. Given these risks,
uncertainties and other factors, you should not place undue reliance on
these forward-looking statements, and we assume no obligation to update
these forward-looking statements, even if new information becomes
available in the future, except as required by law.
>5,000,000 people living
with inherited retinal disease
Very few have a
treatment
3ProQR Therapeutics - Corporate Presentation
RNA therapies in pipeline for >100,000 IRD patients
4
QRX-461
for Usher
Syndrome
Sepofarsen
for LCA10
QR-411
for Usher
Syndrome
QR-1123
for P23H adRP
QR-421a
for Usher
Syndrome
Other programs for
mutations causing
IRDs
QR-1011
for Stargardt’s
Disease
QRX-136
for LCA10
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
50,000
0
~10,000
~2,000
~1,000 ~2,000
~16,000
~7,000
~500
ProQR Therapeutics - Corporate Presentation
RNA Therapy for Inherited Retinal Diseases
Inherited Retinal Diseases (IRDs)
• A group of mutations across 300 genes that cause
retinal blindness
• Affecting >5 million people in the world
• Often leading to vision loss in childhood
RNA Therapy for IRDs
• Mutation specific precision medicine
• No viral vector or changes to DNA required
• Routine route of administration, expected twice a year
dosing
• RNA therapy demonstrated robust vision
improvement in LCA10
ProQR Therapeutics - Corporate Presentation 5
RNA TherapyIntravitreal administration
FULLY OWNED BY PROQR
FULLY OWNED BY PROQR
LICENSED FROM IONIS
FULLY OWNED BY PROQR
FULLY OWNED BY PROQR
FULLY OWNED BY PROQR
FULLY OWNED BY PROQR
FULLY OWNED BY PROQR
EXCLUSIVE GLOBAL LICENSE
YARROW BIOTECHNOLOGY,
EXCLUSIVE GLOBAL LICENSE
6
ProQR pipeline
ProQR Therapeutics - Corporate Presentation
Sepofarsen (QR-110) for LCA10
QR-421a for Usher syndrome 2A
QR-1123 for P23H adRP - Discovered by Ionis
QR-504a for FECD3
QR-411 for Usher syndrome 2A
QR-1011 for Stargardt disease
QRX-461 for Usher syndrome
QRX-136 for LCA
Up to 5 undisclosed targets using
Axiomer®
Undisclosed non-ophtha target
PRECLINICAL PHASE 1/2 PHASE 2/3
ProQR Therapeutics - Corporate Presentation 7
ProQR Inherited Retinal Diseases StrategyMutation specific medicines for IRDs
Patient focused
• >2,000,000 patients worldwide
without a treatment
• Large unmet need
• Engagement with patient
communities globally
Strong translational
platform
• Predictive translational platform based
on human retinal organoids
• In vitro/in vivo correlation
Proven discovery
engine
• >50 molecules in pipeline for IRD
causing mutations
• Validated scientific platform
• Favorable therapeutic profile in IRD:
long half life, IVT administration
Synergistic commercial
infrastructure
• ~35 specialist sites across EU and US
see >80% of the patients
• Specialized sites see patients with all
different IRDs
• Allowing for cross-portfolio synergies
• IVT administration provides access
advantage
Integrated clinical
development
• Deep network in IRD specialist clinical
sites in Europe and Americas
• Vast experience in ophthalmic
development
Sepofarsen (QR-110) for LCA10
8
LCA10
Lose sight in
first years of life
No approved
therapy currently
available
p.Cys998X mutation
(c.2991+1655A>G)
affects ~2,000
patients in the
Western world
RNA therapy: sepofarsen
Goal: Restore
vision/ prevent
vision loss in
patients with
LCA10
Locally adminis-
tered in the eye.
Routine intra-
vitreal procedure
Anticipated
infrequent dosing
of 2 times a year
• Top-line Phase 1/2 clinical trial
results showed rapid, significant
and durable activity and was well
tolerated
• Orphan drug designation & Rare
pediatric disease designation
• FDA Fast track designation and access to
EMA PRIME program
• Ph 2/3 Illuminate trial completed enrollment
January 2021, top-line data expected late
Q1/early Q2 2022
• Pediatric trial underway
ProQR Therapeutics - Corporate Presentation
Target registration dose – key outcomesOnset of effect within 3 months, sustained out to month 12 in the 160/80 µg dose group (n=6)
ProQR Therapeutics - Corporate Presentation 9
EyeBCVA – LogMAR
(n=6)Red FST – log cd/m2
(n=6)Blue FST – log cd/m2
(n=6)Mobility course – composite
score (n=6)
Treated (TE)
-0.93 (0.43)p=0.13 vs. CE
-0.66 (0.14)p<0.05 vs. CE
-0.63 (0.31)p=0.09 vs. CE
4.0 (1.27)p=0.06 vs. CE
Untreated (CE) -0.22 (0.11) 0.05 (0.17) 0.12 (0.16) 2.7 (1.11)
-1,2
-1
-0,8
-0,6
-0,4
-0,2
0
0,2
Ch
an
ge
in B
CV
A (
Lo
gM
AR
)BCVA
1st eye 2nd eye
Improved
Acuity
Impaired
Acuity
-1
-0,8
-0,6
-0,4
-0,2
0
0,2
Ch
an
ge
in F
ST (
log c
d/m
2)
FST
More
Sensitive
Less
Sensitive
-0,5
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
Ch
an
ge
in M
ob
ility
(le
vels
)
Mobility
1st eye 2nd eye
More
Impairment
Less
Impairment
1st eye blue light 2nd eye blue light
1st eye red light 2nd eye red light
Phase 1b/2 sepofarsen trial – PQ-110-001; NCT03140969
Illustration of BCVA improvement
Subject P3
• Baseline:
2.4 LogMAR (20/1000)
• 3 months:
1.12 LogMAR (20/125)
• Improvement:
1.28 LogMAR*
*From being worse than legally blind
to navigating freely, watching tv and
being able to see family faces.
ProQR Therapeutics - Corporate Presentation 10
Baseline (2.4 LogMAR) M3 (1.12 LogMAR) M9 (0.58 LogMAR)
Using “Thru My Eyes” App
Sepofarsen pivotal Phase 2/3 trialEnrollment completed Jan. 2021; top-line data expected late Q1/early Q2 2022
ProQR Therapeutics - Corporate Presentation 11
• Double-masked, randomized, controlled,
12-month, multiple dose study
• Could serve as the sole registration trial
• Sites in North America, select EU
countries, and South America
• 30+ patients >8 years old
• Multiple IVT injections in both eyes
• First patient dosed in April 2019
• Primary (registration) endpoint:
• Visual Acuity (ETDRS, BRVT)
• Key secondary endpoints
• Mobility course
• Full field stimulus testing (FST)
• Ocular instability (OCI)
• Optical coherence tomography (OCT)
0 month 3 month 6 month 9 month12 month
Primary Endpoint 15 month 18 month 21 month 24 month
Sepofarsen: 80 µg loading dose, 40 µg maintenance dose (n=12)
Safety
Sepofarsen: 160 µg loading dose, 80 µg maintenance dose (n=12)
Safety
Sham-procedure (n=12) Crossover
= Dose 1st eye = Dose 2nd eye
QR-421a for Ush2aDesigned to treat genetic vision loss in Usher syndrome and non-syndromic RP
ProQR Therapeutics - Corporate Presentation 12
RNA therapy for Usher & nsRP
Develop hearing and vision
loss in childhood and are
completely blind by mid
adulthood
USH2A exon 13 mutations affect
~16,000 patients in Western world.
Approximately 15-25% has exon 13
mutations on both alleles
• Strong preclinical proof of concept
in patient-derived retinal model
• Orphan drug designation &
Rare pediatric disease designation
Partnership
Awarded $7.5M financial
support from FFB to
conduct trial
Potential first-in-class
RNA therapy targeting
USH2A exon 13 mutations
Unmet need
• Fast track designation
• Two pivotal Phase 2/3 trials
– Sirius and Celeste – on track to get
underway before year end
Summary of Phase 1/2 Stellar trial resultsRedosing interval established at 6 month
ProQR Therapeutics - Corporate Presentation 13
Untreated eyesQR-421a Treated eyes
BL 4 12 24 36 48
-2
0
2
4
6
8
10
12
14
BL 12 24 48
-30
-25
-20
-15
-10
-5
0
5
10
15
20
BL 1 4 8 12 16 24 36 48
-10
-8
-6
-4
-2
0
2
4
6
EZ
are
a (
%)
Weeks Weeks Weeks
Ch
an
ge
in
BC
VA
(E
TD
RS
lett
ers
)
# o
f lo
ci w
ith
7d
B m
ore
Single
dose
Single
dose
Single
dose
Mean Change from Baseline in BCVA
Advanced Population
Ellipsoid zone area:
% mean change from baseline
All QR-421a treated subjects
Mean Number of retinal loci with
≥7dB improvement in static perimetry
Early-moderate population
• Effect sustained for approx. 6 months across endpoints
• Durability in line with half-life and pre-clinical modeling
• Sirius and Celeste Phase 2/3 Pivotal trials on track to
start before year end
QR-421a planned Phase 2/3 for Advanced PatientsPreliminary design, to be agreed with regulators
ProQR Therapeutics - Corporate Presentation 14
• Double-masked, randomized, sham controlled, 24-month,
multiple dose study
• Population:
• Approx. 100 patients
• Homozygous and heterozygous, Usher and nsRP
• Baseline BCVA ≤ 20/40
• Primary endpoint: Visual Acuity
• Key secondary endpoint: OCT, Mobility course, Perimetry
• Anticipated start of trial: YE 2021
0 month 3 month 6 month 9 month 15 month 18 month 21 month 24 month
QR-421a: dose 2
QR-421a: dose 1
Sham-procedure
Month 18 Primary
endpoint= Dose
Month 18 Primary
Endpoint
Potential Month 12
Interim Analysis
12 month
QR-421a planned Phase 2/3 for Early-Moderate patientsPreliminary design, to be agreed with regulators
ProQR Therapeutics - Corporate Presentation 15
• Double-masked, randomized, sham controlled, 24-month,
multiple dose study
• Population:
• Approx. 100 patients
• Homozygous and heterozygous, Usher and nsRP
• Primary endpoint: Static Perimetry
• Key secondary endpoint: Mobility course, BCVA, OCT
• Anticipated start of trial: YE 2021
0 month 3 month 6 month 9 month 15 month 18 month 21 month 24 month
QR-421a: dose 2
QR-421a: dose 1
Sham-procedure
12 month
= Dose
Month 18 Primary
Endpoint
Potential Month 12
Interim Analysis
QR-1123 for P23H adRPGapmer targeting autosomal dominant RP due to the P23H mutation in RHO
ProQR Therapeutics - Corporate Presentation 16
P23H adRP
Progressive reduction
in night & peripheral
vision. Blindness is
frequent in mid-
adulthood
No therapy
available
~2,500 patients with
P23H adRP in United
States
RNA therapy: QR-1123
Goal: Restore
vision/prevent vision
loss in patients with
P23H adRP
Locally adminis-
tered in the eye.
Routine intra-
vitreal procedure
Anticipated
infrequent dosing
of 4 times a year
or less
√ Established modality in eye
√ Strong preclinical proof of concept in vivo
√ In-licensed from Ionis Pharmaceuticals
√ 2-year Natural History Study is completed
and will be used to accelerate clinical
development
√ Orphan drug designation
Status
• Phase 1/2 trial ongoing with 5th dosing
cohort enrolled (single 600µg dose)
• Initial data on track for Q4 2021
ProQR Therapeutics - Corporate Presentation 17
QR-1123 Phase 1/2 trial in adRP patientsSingle ascending dose
= Dose in one eye through intravitreal administration DSMC = DSMC review
1 month
DSMC
75 µg
n=1
0 month
150 µg
n=1
12-month follow up
300 µg
n=3
DSMC
DSMC
Single
dose
450 µg
n=3
DSMC
600 µg
n=3
Aurora Phase 1/2 trial
• Goals include safety, tolerability and efficacy
• Initial data expected in 2021 (n=8) to include doses 75µg,
150µg, 300µg, and 450µg; 600µg dose cohort also
enrolled (n=3)
Key endpoints include:
• Visual acuity
• Visual field
• OCT
• Patient Reported Outcomes
ProQR Therapeutics - Corporate Presentation 18
QR-504a for FECD3
Fuchs Endothelial Corneal Dystrophy
Front of the eye disease
leading to blindness in 50+
years of age
>250,000 patients with Repeat
expansion in TCF4
in Western world
√ RNA is established modality in eye
√ Rapid delivery to corneal cells
√ Strong preclinical proof of concept
in human primary cell models
• Trial open
• First data 2022
RNA therapy: QR-504a
For FECD3 repeat
expansion in TCF4
No therapy available
Strong preclinical PoC in
human primary cell
models. Development
candidate selected
Strong PoC
Fuchs Focus Phase 1b trial
• Open-label, single-dose, dose escalation, exploratory study
• Goals include safety, tolerability and molecular proof of concept
• Approximately 6 adult patients
• Trial open, data expected 2022
ProQR Therapeutics - Corporate Presentation 19
QR-504a Phase 1b trial in FECD patients
Molecular proof of concept:
• Biomarker assessment in corneal
tissue removed at surgery for
molecular proof of concept
Eye 1
4 weeks follow-up
Eye 2
>4 weeks
Eye 1&2 follow-up
12 months
Eye 1 tissue collection
during transplant
Eye 2 tissue collection
during transplant
Eye 2 dose
(IVT)
Axiomer® and TRIDENT™ invented by ProQR
ProQR Therapeutics - Corporate Presentation 20
RNA editing platform technologies
Axiomer® A-to-I editing
• Exploiting endogenous ADAR
• Recruited by synthetic Editing
Oligonucleotide (EON)
• I is translated as a G, allowing to
target G-to-A mutations
• Specific, potent, and stable by
design
• >20,000 G-to-A mutations
described in literature
Strong IP protection
• Foundational patents owned or
exclusively licensed by ProQR
• Unrivaled know how on
EON/psEON design and
high-throughput assays
• Key collaborations with academic
experts
TRIDENT™ U-to-Ψ editing
• Specifically target PTC mutations
• Recruitment of globally expressed
endogenous editing machinery
• Pseudouridylation machinery
recruited by single stranded psEON
• Broad applicability in RNA and
protein engineering for medical
purposes
Recent achievements & anticipated milestones
ProQR Therapeutics - Corporate Presentation 21
Sepofarsen for CEP290-mediated LCA10
✓ Complete enrollment in pivotal Phase 2/3 Illuminate
trial (January 2021)
✓ Start pediatric study (Q2 2021)
• Top-line readout from pivotal Phase 2/3 Illuminate
trial in late Q1/early Q2 2022
QR-421a for Usher syndrome and retinitis
pigmentosa
• Start pivotal Phase 2/3 Sirius and Celeste trials by
year end
QR-1123 for autosomal dominant retinitis pigmentosa
• First clinical data in Q4 2021
QR-504a for Fuch’s endothelial corneal dystrophy
✓ Trial open for enrollment (Q2 2021)
• First clinical data in 2022
Axiomer® RNA editing platform technology
✓ Partnership with Lilly announced (September 2021)
– up to 5 targets in liver and nervous system, $50 M
including $30 M equity
• ProQR will develop selected targets in genetic eye
disease, and will provide further guidance on this in
H2 2022
• Based in Leiden, the Netherlands with an office in Cambridge, MA
• 160 employees (35 nationalities)
• 2014 IPO NASDAQ: PRQR
• FD Shares outstanding: ~87.9 million
• Cash position (Q3 2021) €156.1 million, with projected cash runway into 2023
• Gross proceeds from April 2021 offering of $103.5 million
• $7.5M grant funding awarded by Foundation Fighting Blindness
• €4.8M Innovation Credit from Dutch government for sepofarsen program
• Strategic convertible debt financing agreements with Pontifax and Kreos (Q3 2020)
• $50 M upfront and equity licensing and research collaboration with Lilly (Sept 2021)
• Robust IP estate consisting of 31 fully owned patent families and 9 licenses
ProQR Therapeutics - Corporate Presentation 22
ProQR since 2012Facts and figures
Strong team with proven track record
ProQR Therapeutics - Corporate Presentation 23
Management team Supervisory board
Daniel de BoerChief Executive Officer
Honorary former board memberGerard PlatenburgChief Innovation Officer
Smital ShahChief Business & Financial Officer
Naveed ShamsChief Scientific Officer
Antoine Papiernik
Henri Termeer
James Shannon
Alison Lawton
Dinko ValerioChairman
Aniz GirachChief Medical Officer
Bart Filius
Theresa HeggieChief Commercial Officer
ProQR Therapeutics - Corporate Presentation 24
Scientific Advisory Board
Phillip D. Zamore
PhD
Thaddeus Dryja
MD
Art Levin
PhD
James ShannonMD (Chair) Mike Cheetham
PhD
J. Timothy Stout
MD, PhD, MBA
Martin Maier
PhD