Elamipretide (SS-31)

Also known as: Bendavia · MTP-131 · Forzinity

FDA-approved

Last verified: October 30, 2026

At a glance

FDA approval FDA-approved 1 application
Randomized controlled trials 19 of 473 publications on PubMed
Registered clinical trials 30 3 active
Adverse event reports 0 0 classified as serious
  • Elamipretide (SS-31) is an FDA-approved drug, marketed as Forzinity (first approval: September 19, 2025).
  • PubMed lists 473 publications mentioning it, including 19 randomized controlled trials and 170 animal-only studies.
  • ClinicalTrials.gov lists 30 registered studies testing it (3 active).
  • FDA’s adverse event system (FAERS) has no reports mentioning it.

Research topics

  • Mitochondria 85
  • Oxidative Stress 37
  • Reactive Oxygen Species 37
  • Antioxidants 18
  • Cardiolipins 15
  • Apoptosis 13
  • Aging 12
  • Barth Syndrome 11
  • Mitochondria, Heart 11
  • Nanoparticles 10

Most frequent MeSH subject headings in the latest PubMed records (English, as indexed).

Regulatory status

Drugs@FDA applications

Application Product Status First approval Sponsor
NDA215244 FORZINITY Approved, marketed September 19, 2025 STEALTH BIOTHERAPS

Source: Drugs@FDA (openFDA) · verified October 30, 2026 · API query

FDA compounding safety list

Not on FDA's list of bulk drug substances that may present significant safety risks in compounding.

Source: FDA.gov — Category 2 bulk drug substances · verified October 30, 2026

Removal of a substance from a regulatory list does not mean it has been approved. A "research use only" label does not make a product safe or legal for human use.

Scientific publications

  • All publications 473
  • Human (MeSH) 202
  • Animal only 170
  • Clinical trials 21
  • Randomized controlled trials 19
  • Systematic reviews & meta-analyses 2
  • Case reports 5
  • Retracted 1

Counts are PubMed records that mention the peptide in the title or abstract. Categories overlap, and a mention is not the same as testing the peptide as a treatment. Each number opens the exact PubMed search. Effects seen in laboratory or animal studies may not occur in humans. A registered clinical trial does not show that a substance is effective or safe.

Latest publications

Source: PubMed (NCBI) · verified October 30, 2026

Clinical trials

Registered
30
Active
3
With posted results
14

Conditions studied

  • Barth Syndrome 3
  • Heart Failure 3
  • Healthy Volunteers 3
  • Mitochondrial Diseases 2
  • Age-related Macular Degeneration 2
  • Primary Mitochondrial Disease 2
  • Healthy 2
  • Aging, Healthy 1
  • Age Related Macular Degeneration (ARMD) 1
  • Mitochondrial Myopathies 1
  • Mitochondrial Pathology 1
  • Mitochondrial DNA Mutation 1
Study Status Phase Start
Clinical Trial in Patients With Barth Syndrome- 4TAZPower
NCT07531251 Stealth BioTherapeutics Inc.
Recruiting Phase 4 July 2, 2026
Study of Healthy Aging and Physical Function With Elamipretide
NCT07275424 David Marcinek
Recruiting Phase 2 November 26, 2025
ReNEW:Phase 3 Study of Efficacy, Safety & Pharmacokinetics of Subcutaneous Injections of Elamipretide in Subjects With Dry Age-Related Macular Degeneration (Dry AMD)
NCT06373731 Stealth BioTherapeutics Inc.
Active, not recruiting Phase 3 May 30, 2024
Study to Evaluate Efficacy and Safety of Elamipretide in Subjects With Primary Mitochondrial Disease From Nuclear DNA Mutations (nPMD)
NCT05162768 Stealth BioTherapeutics Inc.
Completed Phase 3 April 29, 2022
FRDA Investigator Initiated Study (IIS) With Elamipretide
NCT05168774 Children's Hospital of Philadelphia Results posted
Completed Phase 1, Phase 2 March 3, 2022
ReCLAIM-2 Study to Evaluate Safety,Efficacy & Pharmacokinetics of Elamipretide in Subjects With AMD With Non-central GA
NCT03891875 Stealth BioTherapeutics Inc. Results posted
Completed Phase 2 March 27, 2019
A Trial to Evaluate Safety and Efficacy of Elamipretide Primary Mitochondrial Myopathy Followed by Open-Label Extension
NCT03323749 Stealth BioTherapeutics Inc. Results posted
Terminated Phase 3 October 9, 2017
A Trial to Evaluate Safety, Tolerability and Efficacy of Elamipretide in Subjects With Barth Syndrome
NCT03098797 Stealth BioTherapeutics Inc. Results posted
Completed Phase 2, Phase 3 July 5, 2017
Open-Label Extension Trial to Characterize the Long-term Safety and Tolerability of Elamipretide in Subjects With Genetically Confirmed Primary Mitochondrial Myopathy (PMM)
NCT02976038 Stealth BioTherapeutics Inc. Results posted
Terminated Phase 2 Dec 2016
An Open-Label, Phase 1 Clinical Study to Evaluate the Safety and Tolerability of Subcutaneous Elamipretide in Subjects With Intermediate Age-Related Macular Degeneration
NCT02848313 Stealth BioTherapeutics Inc. Results posted
Completed Phase 1 October 28, 2016
Show 20 more studies
Study Status Phase Start
A Phase 2 Study to Evaluate the Cardiac and Renal Effects of Short Term Treatment With Elamipretide in Patients Hospitalized With Congestion Due to Heart Failure
NCT02914665 Stealth BioTherapeutics Inc.
Completed Phase 2 October 20, 2016
A Study to Evaluate the Effects of 4 Weeks Treatment With Subcutaneous Elamipretide on Left Ventricular Function in Subjects With Stable Heart Failure With Preserved Ejection Fraction
NCT02814097 Stealth BioTherapeutics Inc.
Completed Phase 2 September 2, 2016
Safety, Tolerability, Efficacy of MTP-131 for Treatment of Mitochondrial Disease in Subjects From the MMPOWER Study
NCT02805790 Stealth BioTherapeutics Inc. Results posted
Completed Phase 2 August 22, 2016
Effect of Elamipretide on Left Ventricular Function in Subjects With Stable Heart Failure With Reduced Ejection Fraction
NCT02788747 Stealth BioTherapeutics Inc. Results posted
Completed Phase 2 Jun 2016
A Study Investigating the Safety, Tolerability, and Efficacy of Elamipretide Topical Ophthalmic Solution for Treatment of Leber's Hereditary Optic Neuropathy
NCT02693119 Stealth BioTherapeutics Inc. Results posted
Completed Phase 2 Mar 2016
A Study Investigating the Safety, Tolerability, and Efficacy of Elamipretide Topical Ophthalmic Solution for the Treatment of Fuchs' Corneal Endothelial Dystrophy (FCED)
NCT02653391 Stealth BioTherapeutics Inc. Results posted
Completed Phase 1, Phase 2 Feb 2016
A Phase 1 Study Investigating the Safety and Pharmacokinetics of Repeat-dose Intravenous Infusion of MTP-131 in Subjects With Impaired Renal Function
NCT02436447 Stealth BioTherapeutics Inc.
Completed Phase 1 May 2015
A Multiple Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of Bendavia™ (MTP-131) in Patients With Heart Failure
NCT02388529 Stealth BioTherapeutics Inc.
Withdrawn Phase 1 May 2015
Safety, Tolerability, and Efficacy of MTP-131 for the Treatment of Mitochondrial Myopathy
NCT02367014 Stealth BioTherapeutics Inc. Results posted
Completed Phase 1, Phase 2 Feb 2015
A Phase 2 Study to Evaluate the Impact of MTP-131 (Bendavia™) on Skeletal Muscle Function in Elderly
NCT02245620 Stealth BioTherapeutics Inc. Results posted
Completed Phase 2 January 15, 2015
A Study of MTP-131 Topical Ophthalmic Solution in Subjects With Diabetic Macular Edema and Non-Exudative Intermediate Age-related Macular Degeneration
NCT02314299 Stealth BioTherapeutics Inc.
Completed Phase 1, Phase 2 Nov 2014
A Study Investigating the Safety, Tolerability, and Pharmacokinetics of MTP-131 in Subjects With Congestive Heart Failure
NCT02388464 Stealth BioTherapeutics Inc.
Completed Phase 1 Jul 2014
Safety and Pharmacokinetic (PK) Study of Oral Bendavia Administered for 7 Days
NCT01786915 Mighty Therapeutics, Inc.
Completed Phase 1 Feb 2013
Effects of Intravenous Bendavia™ on Reperfusion Injury in Patients Undergoing Angioplasty of the Renal Artery
NCT01755858 Stealth BioTherapeutics Inc. Results posted
Terminated Phase 1, Phase 2 Dec 2012
A Phase 1 Study Examining the Pharmacokinetics and Tolerability of a Single Oral Dose of Bendavia (MTP-131)
NCT01754818 Mighty Therapeutics, Inc.
Completed Phase 1 Nov 2012
Evaluation of Myocardial Effects of MTP-131 for Reducing Reperfusion Injury in Patients With Acute Coronary Events
NCT01572909 Stealth BioTherapeutics Inc. Results posted
Completed Phase 2 Apr 2012
The Impact of Intravenous Bendavia™ on Endothelial Reactivity Dysfunction in Cigarette Smoking
NCT01518985 Mighty Therapeutics, Inc.
Completed Phase 1 Jan 2012
Study to Assess the Pharmacodynamic Effects of Unfractionated Heparin (UFH) in Healthy Volunteers With and Without Bendavia
NCT01513200 Mighty Therapeutics, Inc.
Completed Phase 1 Jan 2012
Study to Evaluate Safety, Tolerability, and Pharmacokinetics (PK) of Intravenous (IV) Infusion of MTP-131 (Bendavia™) in Healthy Adults
NCT01115920 Mighty Therapeutics, Inc.
Completed Phase 1 May 2010
An Intermediate Size Expanded Access Protocol of Elamipretide
NCT04689360 Stealth BioTherapeutics Inc.
Available — —

All 30 studies on ClinicalTrials.gov ↗

Source: ClinicalTrials.gov · verified October 30, 2026

Adverse event reports

No FAERS reports mention this peptide.

Source: FDA FAERS · verified October 30, 2026 · API query

FDA prescribing information

Official US prescribing information. Dosing sections are intentionally not shown.

  • FORZINITY HUMAN PRESCRIPTION DRUG Stealth Biotherapeutics Inc. December 10, 2025

Source: DailyMed / openFDA

Change history

No changes since monitoring began on October 30, 2026.