A Gene Transfer Study to Evaluate the Safety, Tolerability and Efficacy of SRP-6004 in Ambulatory Participants With Limb Girdle Muscular Dystrophy, Type 2B/R2 (LGMD2B/R2, Dysferlin [DYSF] Related)

August 27, 2025 updated by: Sarepta Therapeutics, Inc.

An Open-Label, Systemic Gene Transfer Study to Evaluate the Safety, Tolerability, and Efficacy of SRP 6004 Administered by Systemic Infusion in Ambulatory Subjects With Limb Girdle Muscular Dystrophy Type 2B/R2 (LGMD2B/R2, Dysferlin Related)

The primary purpose of this study is to evaluate the safety of SRP-6004 administered by intravenous (IV) infusion in ambulatory participants with LGMD2B/R2 (DYSF related).

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

2

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Ohio
      • Columbus, Ohio, United States, 43205
        • Nationwide Children's Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Possess 1 homozygous or 2 heterozygous pathogenic and/or likely pathogenic DYSF Deoxyribonucleic acid (DNA) gene mutations as documented prior to screening visits.
  • Participants must be ambulatory per protocol specified criteria.
  • Ability to cooperate with motor assessment testing.
  • Has accessible and intact lower and upper extremity musculature for biopsy.
  • Have adeno-associated virus rhesus serotype 74 (rAAVrh74) antibody titers < 1:400 (that is, not elevated) as determined by enzyme-linked immunosorbent assay (ELISA).

Exclusion Criteria:

  • Exposure to gene therapy, investigational medication, or other protocol-specified treatment within the protocol specified time limits.
  • Abnormality in protocol-specified diagnostic evaluations or laboratory tests.
  • Presence of any other clinically significant illness, medical condition, or requirement for chronic drug treatment that in the opinion of the Investigator creates unnecessary risk for gene transfer.

Note: Other inclusion or exclusion criteria could apply.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: SRP-6004
Participants will receive single IV infusion of SRP-6004 on Day 1.
Genetic: SRP-6004
Single IV infusion of SRP-6004
Other Names:
  • rAAVrh74.MHCK7.DYSF.DV

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Number of Treatment-Emergent Adverse Events (AEs) and Treatment-Emergent Serious Adverse Events (SAEs)
Time Frame: Baseline up to Month 60
Baseline up to Month 60

Secondary Outcome Measures

Outcome Measure
Time Frame
Change from Baseline in Percent of Normal DYSF Protein Expression as Measured by Western Blot
Time Frame: Baseline, Day 90 and Month 15
Baseline, Day 90 and Month 15
Change from Baseline in Percent of Normal DYSF Protein Expression as Measured by Immunofluorescence (IF) Fiber Intensity
Time Frame: Baseline, Day 90 and Month 15
Baseline, Day 90 and Month 15
Change from Baseline in Percent of Normal DYSF Protein Expression as Assessed by IF Percent DYSF Positive Fibers (PPF: DYSF)
Time Frame: Baseline, Day 90 and Month 15
Baseline, Day 90 and Month 15

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sarepta Therapeutics, Inc.

Investigators

  • Study Director: Medical Director, Sarepta Therapeutics, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 22, 2023

Primary Completion (Actual)

June 13, 2025

Study Completion (Actual)

June 13, 2025

Study Registration Dates

First Submitted

June 7, 2023

First Submitted That Met QC Criteria

June 7, 2023

First Posted (Actual)

June 15, 2023

Study Record Updates

Last Update Posted (Estimated)

September 4, 2025

Last Update Submitted That Met QC Criteria

August 27, 2025

Last Verified

August 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SRP-6004-102

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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