New MRI breath test could spot lung transplant rejection earlier

NCT ID NCT03603899

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study tested a new MRI technique using inhaled hyperpolarized xenon gas to detect early signs of bronchiolitis obliterans syndrome (BOS), a common form of chronic rejection after lung transplant. Only 3 participants were involved, and the goal was to see if the imaging could spot ventilation defects. The research is very early and focused on improving diagnosis, not treatment.

What this could mean

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

Active substance
hyperpolarized 129Xenon gas
What this could lead to
If successful, this imaging method could allow earlier detection of bronchiolitis obliterans in lung transplant patients, potentially improving outcomes through timely intervention.
What could go wrong
This is a very small, early-phase study (only 3 participants) focused on developing imaging techniques, not testing a treatment. The method may not prove sensitive enough or may not work in larger, more diverse groups.

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Conditions

The condition(s) this trial relates to.

Bronchiolitis Obliterans bronchiolitis obliterans syndrome

As listed by the trial registrant

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

Contacts and locations

Locations

  • Cincinnati Children's Hospital Medical Center

    Cincinnati, Ohio, 45229, United States

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