SS-31 trials recruiting now

2 registrations that name SS-31 as a study arm and are recruiting or about to, as ClinicalTrials.gov listed them on Oct 20, 2026. Read each listing for its full criteria and current status.

Kymata never assesses eligibility. Each listing names its own criteria; only its study team can say whether someone can join. Trial doses are given under the trial's monitoring and are not a schedule for anyone outside it.

Filter 2 registrations

Status

Phase

2US sites across 2 states

All 2 registrations

RecruitingNCT07531251

Clinical Trial in Patients With Barth Syndrome- 4TAZPower

  • Phase 4
  • Stealth BioTherapeutics Inc.
  • About 48 people
  • Started Jul 2, 2026

In plain words A Phase 4 study of SS-31 in male participants 5 to 55, run by Stealth BioTherapeutics Inc.. It plans to enroll about 48 people at 3 sites, 1 of them in the US.

Who it lists and where

Who the trial lists, as registered

Lists male participants 5 to 55. Conditions: Barth Syndrome.

  • Willing and able to provide signed informed consent form (ICF) prior to participation in any trial-related procedures.
  • Agrees to adhere to the trial requirements for the length of the trial.
  • Must have genetically confirmed Barth Syndrome (pathogenic variant in the TAZ gene)
  • Male aged ≥ 5 years at time of the Screening Visit

16 more inclusion criteria and the exclusion criteria are on the listing.

What it tests, as registered

Elamipretide; Placebo

Registered summary

Phase 3b/4, randomized, double-blind, parallel-group, placebo-controlled clinical trial to evaluate the efficacy, safety, and pharmacokinetics of a once daily SC injection of elamipretide in subjects with genetically confirmed BTHS for 72 weeks. The primary trial objective is to confirm the efficacy of elamipretide which is approved in the United States(FORZINITY™) under the accelerated approval based on an improvement in knee extensor muscle strength, an intermediate clinical endpoint.

Where, as registered

1 US site in 1 state; also Canada (1), United Kingdom (1).

RecruitingNCT07275424

Study of Healthy Aging and Physical Function With Elamipretide

  • Phase 2
  • David Marcinek
  • About 30 people
  • Started Nov 26, 2025

In plain words A Phase 2 study of SS-31 in people 65 to 80, run by David Marcinek. It plans to enroll about 30 people at 1 US site.

Who it lists and where

Who the trial lists, as registered

Lists people 65 to 80; healthy volunteers accepted. Conditions: Aging, Healthy.

  • Male or female aged ≥65 and ≤80 years
  • VO2peak ≤ 37.3ml/kg/min for men and ≤ 25.7ml/kg/min for women as evidence of lower mitochondrial function
  • Are ambulatory and able to perform activities of daily living without assistance
  • Have sufficient venous access for clinical blood draw

8 more inclusion criteria and the exclusion criteria are on the listing.

What it tests, as registered

Elamipretide will be supplied as a sterile 5.0 mL single-patient, multi-dose glass vial containing 3.75 mL of elamipretide solution (elamipretide [80 mg/mL], phosphate buffer, and benzyl alcohol)

Registered summary

This study will utilize a daily dose of elamipetide for 4 weeks and will screen a sufficient number of subjects for 30 subjects to enroll in the study. The planned duration of the study includes baseline measurement, followed by 4 weeks intervention period, a midpoint (2week ±3days) check-in phone interview, and post intervention visits that mirror the baseline visits. After the last injection, subjects will enter the 2-week follow-up period, concluded by the end-of-study contact.

Where, as registered

1 US site in 1 state.

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