4TAZPower: Elamipretide for Barth Syndrome

This study is for men aged 5 to 55 years old with Barth Syndrome, a genetic condition. It's testing a drug called elamipretide (also known as FORZINITY™) given as a shot under the skin once a day, or a placebo (an inactive shot that looks like the drug). The main goal is to see if elamipretide can improve muscle strength over 72 weeks. Elamipretide is already approved in the United States to help with muscle strength in Barth Syndrome, and this study aims to confirm its effectiveness. You would need to provide informed consent to participate.

Study design
This is a Phase 3b/4, randomized, double-blind, parallel-group, placebo-controlled study involving 48 participants.
What's involved
You would receive daily subcutaneous (under the skin) injections of either elamipretide or placebo for 72 weeks.
Compensation
Not stated in the trial record.
Follow-up
The primary efficacy endpoint is measured at 72 weeks, indicating the duration of the main treatment period.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07531251

Clinical Trial in Patients With Barth Syndrome- 4TAZPower

Recruiting
PHASE4Ages 5–55InterventionalTreatment
Stealth BioTherapeutics Inc.
~48 participants
Updated 2026-07-13 on ClinicalTrials.gov
What's tested:ElamipretidePlacebo

At a glance

Recruiting sites
1 of 3 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Primary Efficacy End Point
Measured over 72 weeks
Barth Syndrome
3 sites across 3 states
Massachusetts1
Alberta1
United Kingdom1
  • Rekha Sathyanarayana · STUDY_DIRECTOR · Stealth BioTherapeutics Inc.

Opens a ready-to-send draft in your own email app — review before sending.

  • Primary Efficacy End Point72 weeks

    -change in the composite normalized score of the three functional tests: Six-minute walk test (6MWT), the triple-timed up and go test (3TUG), and the Five times sit-to-stand test (5XSST) from baseline to 72 weeks of treatment