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Can plasma exchange clear the way for gene therapy in duchenne?

NCT ID NCT06597656

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 early study tested whether a blood-cleaning procedure called plasmapheresis could allow boys with Duchenne muscular dystrophy who have antibodies against the gene therapy carrier to still receive the treatment. Only 3 boys were enrolled before the study was stopped early. The goal was to see if the gene therapy could safely produce dystrophin protein in muscle.

What this could mean

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

Active substance
delandistrogene moxeparvovec (gene therapy)
What this could lead to
If successful, this approach could allow more boys with Duchenne to receive gene therapy even if they have pre-existing antibodies.
What could go wrong
This was a very small, early-phase trial that was terminated early, so results are limited. The added step of plasmapheresis carries its own risks and may not overcome the immune barrier.

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

3 people

The number who actually took part.

Started

Sep 2024

Finished

Aug 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

4 to 8 years

Sex

Male participants only

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: * Ambulatory per protocol specified criteria. * Has a definitive diagnosis of DMD prior to Screening based on documentation of clinical findings and prior confirmatory genetic testing. * Ability to cooperate with motor assessment testing. * Has elevated AAVrh74 antibody titers per protocol-specified requirements. * A pathogenic frameshift mutation, nonsense mutation or premature stop codon or pathogenic variant in the DMD gene that is expected to lead to absence of dystrophin protein with exception of a mutation in exon 8 and/or 9. * Stable daily dose of oral corticosteroids for at least 12 weeks prior to Screening, and the dose is expected to remain constant throughout the study (except for modifications to accommodate changes in weight). Exclusion Criteria: * Has reduced left ventricular ejection fraction on the screening ECHO or clinical signs and/or symptoms of cardiomyopathy. * Presence of any other clinically significant illness, including cardiac, pulmonary, hepatic, renal, hematologic, immunologic, or behavioral disease, or infection or malignancy or concomitant illness or requirement for chronic drug treatment that in the opinion of the Investigator creates unnecessary risks for gene transfer or a medical condition or extenuating circumstance that, in the opinion of the Investigator, might compromise the participant's ability to comply with the protocol required testing or procedures or compromise the participant's wellbeing, safety, or clinical interpretability. * 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. . Note: Other inclusion or exclusion criteria could apply.

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Conditions

The condition(s) this trial relates to.

Duchenne muscular dystrophy

As listed by the trial registrant

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

Duchenne muscular dystrophy

Contacts and locations

Locations

  • Nationwide Children's Hospital

    Columbus, Ohio, 43205, United States

  • University of Florida, College of Medicine

    Gainesville, Florida, 32610, United States

  • Washington University School of Medicine in St. Louis

    St Louis, Missouri, 63110, United States

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