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QR-421a

Phase 1

Retinitis Pigmentosa | Small molecule | Rare Disease |ProQR Therapeutics N.V.|Last Updated: Apr 20, 2022

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindSHAM_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment20
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03780257Study to Evaluate Safety and Tolerability of QR-421a in Subjects With RP Due to Mutations in Exon 13 of the USH2A GenePHASE1 COMPLETED 20Mar 6, 2019Oct 14, 2021Apr 20, 20227 United States, Canada +1
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Study Endpoints
Primary Endpoints
Incidence and severity of ocular adverse events (AEs) in the treatment and contralateral eye
24 months

Incidence and severity of ocular AEs

Incidence and severity of non-ocular AEs
24 months
Secondary Endpoints
Change in DAC perimetry
24 months
Change in static perimetry
24 months
Change in EZ area by SD-OCT
24 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
QR-421aEXPERIMENTALSingle dose administration
Sham-procedure (dose cohort 1&2 only)SHAM_COMPARATORSham-procedure (no experimental drug administered)
Interventions
NameTypeDescription
QR-421aDRUGRNA antisense oligonucleotide for intravitreal injection
Sham-procedure (dose cohort 1&2 only)OTHERSham-procedure (no experimental drug administered)
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites7

Inclusion Criteria: 1. Male or female, ≥ 18 years of age. 2. Clinical presentation consistent with RP with Usher syndrome type 2 or non-syndromic RP (NSRP), based on ophthalmic, audiologic, and vestibular examinations. 3. A molecular diagnosis of homozygosity or compound heterozygosity for 1 or mor...

Countries:United StatesCanadaFrance
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