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Genetic: AAV5-hRKp.RPGR Intermediate Dose

Phase 3

X-Linked Retinitis Pigmentosa | Monoclonal antibody | Ophthalmology |Johnson & Johnson|Last Updated: Jun 5, 2026

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
RandomizedCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment97
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04794101Follow-up Gene Therapy Trial for the Treatment of X-linked Retinitis Pigmentosa Associated With Variants in the RPGR GenePHASE3 ACTIVE NOT_RECRUITING 97Dec 4, 2020Dec 7, 2029Jun 5, 202628 United States, Belgium +9
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Study Endpoints
Primary Endpoints
Number of Participants with Ocular and Non-ocular Adverse Events
Day 1 - Month 60

Number of participants with ocular and non-ocular adverse events will be assessed.

Number of Participants With Abnormalities in Laboratory Assessments
Day 1 - Month 60

Number of participants with abnormalities in laboratory assessments will be assessed.

Change From Baseline in Best Corrected Visual Acuity (BCVA) by Early Treatment Diabetic Retinopathy Study (ETDRS) Chart Letter Score in Monocular Assessment
From Baseline - Month 60

Change from baseline in BCVA by ETDRS chart letter score in monocular assessment will be assessed.

Change From Baseline in Low Luminance Visual Acuity by ETDRS Chart Letter Score in Monocular Assessment
From Baseline- Month 60

Change from baseline in low luminance visual acuity by ETDRS chart letter score in monocular assessment will be assessed.

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Study Design & Arms
AllocationRANDOMIZED
MaskingSINGLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Deferred Treatment From MGT-RPGR-021 of Intermediate DoseEXPERIMENTALDeferred treatment
Already Treated in MGT-RPGR-021EXPERIMENTALAlready treated
Deferred Treatment From MGT-RPGR-021 Low DoseEXPERIMENTALDeferred treatment
Interventions
NameTypeDescription
Genetic: AAV5-hRKp.RPGR Intermediate DoseBIOLOGICALBilateral, subretinal administration of AAV5-hRKp.RPGR - deferred treatment group
Genetic: AAV5-hRKp.RPGR Low DoseBIOLOGICALBilateral, subretinal administration of AAV5-hRKp.RPGR - deferred treatment group
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Eligibility Criteria
Age Range3 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites28

Inclusion Criteria: * Male or female, 3 years of age or older, has XLRP confirmed by a retinal specialist and has a predicted disease-causing sequence variant in RPGR confirmed by an accredited laboratory. Exclusion Criteria: * None

Countries:United StatesBelgiumCanadaDenmarkFranceIsraelItalyNetherlandsSpainSwitzerlandUnited Kingdom
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Recent Changes (Last 90 Days)
LOWJun 5, 2026NCT04794101lastUpdatePostDate: changed
LOWJun 5, 2026NCT04794101lastUpdatePostDate: changed
LOWJun 5, 2026NCT04794101lastUpdatePostDate: changed
LOWJun 5, 2026NCT04794101lastUpdatePostDate: changed
LOWMay 26, 2026NCT04794101primaryCompletionDate: changed
LOWMay 24, 2026NCT04794101studyFirstPostDate: changed