Could a transplant drug help patients with rare muscle disease?

NCT ID NCT04789070

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This phase 3 trial tests whether sirolimus, a drug used in organ transplants, can slow disease progression in people with inclusion body myositis (IBM), a rare muscle-weakening condition. The study involves 140 adults aged 45 and older who can walk at least 200 meters. Over 84 weeks, researchers will measure changes in muscle function using a rating scale and a walking test. The goal is to see if sirolimus helps patients stay stronger and more independent.

What this could mean

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

Active substance
sirolimus (also known as rapamycin)
What this could lead to
If successful, sirolimus could slow or stabilize muscle decline in inclusion body myositis, helping patients maintain function and independence longer.
What could go wrong
This is a phase 3 trial, but results are not yet available. Sirolimus is an immunosuppressant and may cause side effects like infections or mouth sores. It may not work for all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • Austin Health

    Melbourne, Victoria, Australia

  • Concord Repatriation Hospital

    Sydney, New South Wales, Australia

  • Johns Hopkins University

    Baltimore, Maryland, 21218, United States

  • Leiden University Medical Center

    Leiden, Netherlands

  • Perron Institute

    Perth, Washington, Australia

  • Royal Adelaide Hospital

    Adelaide, South Australia, Australia

  • Royal Brisbane and Women's Hospital

    Brisbane, Queensland, Australia

  • Royal Northshore Hospital

    Sydney, New South Wales, Australia

  • St Vincent's Hospital

    Melbourne, Victoria, Australia

  • University of Kansas Medical Center

    Kansas City, Kansas, 66160, United States

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