Could donor stem cells help lungs heal in ARDS?

NCT ID NCT03818854

First seen Jun 27, 2026 ยท Last updated Jun 27, 2026

Summary

This study tested whether a single infusion of stem cells from donor bone marrow could help people with acute respiratory distress syndrome (ARDS), a severe lung condition. 120 adults on ventilators received either stem cells or a placebo. Researchers measured changes in oxygen levels and lung injury scores over the first 36 hours and beyond.

What this could mean

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

Active substance
human mesenchymal stromal cells (stem cells from donor bone marrow)
What this could lead to
If it works, this could point toward a new treatment for severe lung failure (ARDS) that reduces the need for high oxygen and ventilator support.
What could go wrong
This is a mid-stage trial with only 120 participants, so results may not apply to all ARDS patients. The treatment is still experimental and may not improve outcomes.

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

  • Harborview Medical Center

    Seattle, Washington, 98112, United States

  • Memorial Hermann Hospital - Texas Medical Center

    Houston, Texas, 77030, United States

  • Oregon Health & Science University

    Portland, Oregon, 97239, United States

  • University of California Davis Medical Center

    Sacramento, California, 95817, United States

  • University of California San Francisco

    San Francisco, California, 94143, United States

  • Vanderbilt University Medical Center

    Nashville, Tennessee, 37232, United States

  • Zuckerberg San Francisco General Hospital and Trauma Center

    San Francisco, California, 94110, United States

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