US-based biopharmaceutical company Stealth BioTherapeutics has commenced two Phase II trials of investigational drug elamipretide to treat heart failure patients.

The trials include PROGRESS-HF in patients with heart failure with reduced ejection fraction and RESTORE-HF in those with preserved ejection fraction.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

Top-line report of both phases is expected at the second half of next year.

Both the randomised, double-blind, placebo-controlled trials are designed to measure the effects of elamipretide on left ventricular function in patients with stable heart failure with reduced ejection fraction (PROGRESS-HF) or preserved ejection fraction (RESTORE-HF).

"PROGRESS-HF primarily focuses on changing from baseline in the volume of blood remaining in the left ventricle at the end of contraction, as measured by the cardiac MRI."

Elamipretide will be administered through subcutaneous injections on a daily basis over a duration of four weeks.

PROGRESS-HF primarily focuses on changing from baseline in the volume of blood remaining in the left ventricle at the end of contraction, as measured by the cardiac MRI.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

The secondary endpoint of PROGRESS-HF involves other measures of cardiac function, including ejection fraction, by echocardiography and MRI.

The primary endpoints of RESTORE-HF focus on changes in diastolic heart function while resting and when subjected to submaximal stress, as measured by echocardiography.

The secondary endpoint of RESTORE-HF involves changes in exercise capacity determined after a six-minute walk test, and responses to the SF36 patient-reported health survey.

Stealth clinical development vice-president Jim Carr said: "The heart’s reduced ability to relax and contract during heart failure may be linked to mitochondrial dysfunction and a resulting lack of energy in heart muscle.

"Since muscle is required for both pumping and re-filling the heart, we believe elamipretide could address this lack of energy in the heart muscle in the two major forms of heart failure by improving mitochondrial function."

Stealth’s elamipretide has been developed to modify disease by preserving energetics and reviving normal energy production in mitochondria, while minimising oxidative stress.

Clinical Trials Arena Excellence Awards - Nominations Closed

Nominations are now closed for the Clinical Trials Arena Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
YPrime won the Innovation award for AI in Clinical Trials and the Environmental award for Sustainable Trials, thanks to its eCOA, IRT and eConsent platforms. Explore how purpose-built AI, paperless workflows and circular hardware practices are reshaping timelines, data quality and ESG performance in clinical research.

Discover the Impact