NCT06092034 · Rocket Pharmaceuticals Inc.
A Gene Therapy Study of RP-A501 in Male Patients With Danon Disease
What this study is about
This is a single treatment group$1 Phase 2 trial to evaluate the effectiveness and safety of RP-A501, a recombinant adeno-associated virus serotype 9 (AAV9) containing the human lysosome-associated membrane protein 2 isoform B (LAMP2B) transgene, in male patients with Danon Disease.
View original scientific description
This is a single arm Phase 2 trial to evaluate the efficacy and safety of RP-A501, a recombinant adeno-associated virus serotype 9 (AAV9) containing the human lysosome-associated membrane protein 2 isoform B (LAMP2B) transgene, in male patients with Danon Disease.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Documentation of a pathogenic or likely pathogenic variant of the LAMP2 gene.
- Age ≥8 years.
- Evidence of left ventricular hypertrophy with preserved systolic function phenotype as defined by each of the following:
- Abnormal thickening of Left ventricular wall,
- Left ventricular ejection fraction (LVEF) ≥ 50%.
- New York Heart Association (NYHA) Class II to III.
- High sensitivity Troponin I (hsTnI) ≥20% above the upper limit of normal (ULN)
- Ability to comply with study procedures including investigational therapy and follow-up evaluations. Key
Exclusion criteria
- Anti-AAV9 neutralizing antibody titer \>1:40.
- Severe heart failure or requirement for advanced therapies.
- History of intracardiac thrombosis or arterial thromboembolic events including stroke, transient ischemic attack (TIA), acute coronary syndrome, myocardial infarction or unstable angina.
- Prior cardiac or other organ (lung, liver, other) transplantation.
Where
- La Jolla, California
- Boston, Massachusetts
- Philadelphia, Pennsylvania
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced May 4, 2026 · Source of record for eligibility and locations