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Experimental gene therapy for rare muscle disease tested in just 2 people

NCT ID NCT05906251

Disease control Sponsor: Sarepta Therapeutics, Inc. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early This study
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This was a very early (Phase 1) study testing a gene therapy called SRP-6004 for people with limb girdle muscular dystrophy type 2B/R2, a rare muscle-weakening disease. The goal was to see if a single IV infusion of the therapy is safe and can help the body produce a missing protein called dysferlin. Only 2 participants were enrolled, and the study was terminated early, so we have very limited information about its effects.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
SRP-6004 (a gene therapy given as a single IV infusion)
What this could lead to
If successful, this could point toward a treatment that restores dysferlin protein in muscle cells, potentially slowing or stopping muscle weakness in LGMD2B/R2.
What could go wrong
This was a very early (Phase 1) trial with only 2 participants and was terminated, so we don't know if it works or is safe. Gene therapies can cause immune reactions or other serious side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

2 people

The number who actually took part.

Started

May 2023

Finished

Jun 2025

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 50 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

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.

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Conditions

The condition(s) this trial relates to.

autosomal recessive limb-girdle muscular dystrophy type 2B limb-girdle muscular dystrophy

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Limb girdle muscular dystrophy

Contacts and locations

Locations

  • Nationwide Children's Hospital

    Columbus, Ohio, 43205, United States

More trials for these conditions

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