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New MRI breath test could spot lung transplant rejection earlier

NCT ID NCT03603899

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Sep 18, 2026 · Updated 3 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.

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

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

3 people

The number who actually took part.

Started

Sep 2020

Finished

May 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

6 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Lung Transplantation within the last 10 years or being assessed for possible lung transplantation. * Participant must be able to hold their breath for up to 16 seconds. Exclusion Criteria: * Standard MRI exclusion criteria * Bleeding disorders * Participant is claustrophobic or otherwise unable to tolerate the imaging * Pregnancy or positive pregnancy test * Symptoms of respiratory infection within the past two weeks. * Baseline oximetry at MRI visit of less than 95% on room air or less than 95% on a previously prescribed dosage of oxygen delivered by nasal cannula.

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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

More trials for these conditions

Other studies related to the condition(s) this trial covers.