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RP-A501

Phase 2

Danon Disease | Gene therapy | Other |Rocket Pharmaceuticals, Inc.|Last Updated: May 4, 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
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment14
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06092034A Gene Therapy Study of RP-A501 in Male Patients With Danon DiseasePHASE2 RECRUITING 14Sep 5, 2023Apr 1, 2032May 4, 20266 United States, Germany +2
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Study Endpoints
Primary Endpoints
Evaluation of efficacy via primary endpoint comprised of LAMP2 myocardial tissue expression and left ventricular mass index
12 Months post-infusion

Increase of myocardial tissue expression of LAMP2 protein and decrease in left ventricular mass index (LVMI).

Secondary Endpoints
Evaluation of efficacy via components of the primary endpoint - LAMP2
12 months post infusion
Evaluation of efficacy via components of the primary endpoint - Left Ventricular Mass Index (LVMI)
12 months post infusion
Evaluation of efficacy via biomarker evidence of myocardial injury - High Sensitivity Troponin I (hsTnI)
12 months post infusion
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
RP-A501EXPERIMENTALOne planned dose of RP-A501 in cohorts of subjects with a confirmed diagnosis of Danon Disease.
Interventions
NameTypeDescription
RP-A501GENETICRP-A501 is a gene therapy product consisting of a rAAV9 capsid containing the human LAMP2B transgene which will be administered as a single IV infusion.
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Eligibility Criteria
Age Range8 Years — N/A
SexMALE
Healthy VolunteersNo
Study Sites6

Key Inclusion Criteria: 1. Documentation of a pathogenic or likely pathogenic variant of the LAMP2 gene. 2. Male. 3. Age ≥8 years. 4. Evidence of left ventricular hypertrophy with preserved systolic function phenotype as defined by each of the following: 1. Abnormal thickening of Left ventricul...

Countries:United StatesGermanyItalyUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06092034primaryCompletionDate: changed
LOWMay 24, 2026NCT06092034studyFirstPostDate: changed