Sickle cell drug safety trial ends early

NCT ID NCT05632354

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

Summary

This study looked at the long-term safety of the drug osivelotor in people with sickle cell disease who had already taken it in an earlier trial. The goal was to track side effects and blood changes over time. However, the study was terminated early, so the full safety picture is not yet known.

What this could mean

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

Active substance

Osivelotor (a drug to help red blood cells carry oxygen better)

What this could lead to

If successful, this could provide a long-term treatment option to reduce painful crises in sickle cell disease.

What could go wrong

The trial was terminated early, so long-term safety and effectiveness data are limited. It is still an experimental drug with unknown risks.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

sickle cell disease

As listed by the trial registrant

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

Contacts and locations

Locations

  • Aminu kano Teaching Hospital

    Kano, 700233, Nigeria

  • Inova Schar Cancer Institute

    Fairfax, Virginia, 22031, United States

  • Lagos University Teaching Hospital

    Lagos, 100254, Nigeria

  • Mississippi Center for Advanced Medicine

    Madison, Mississippi, 39110, United States

  • Our Lady of the Lake Hospital, Inc.

    Baton Rouge, Louisiana, 70808, United States

  • University College Hospital Ibadan

    Ibadan, Oyo/ibadan North, 200212, Nigeria

  • University Medical Center Inpatient Pharmacy

    New Orleans, Louisiana, 70112, United States

  • University Medical Center New Orleans

    New Orleans, Louisiana, 70112, United States

  • University of Texas Health Science Center

    Houston, Texas, 77030, United States