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Your breath may reveal COPD: new study investigates

NCT ID NCT05437198

Knowledge-focused Sponsor: Centre Hospitalier Intercommunal Creteil Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study collects exhaled breath from 240 adults—some with COPD and some without—to compare the types and amounts of bacteria present. Participants breathe through a straw into a device for 5 minutes, and a second sample is taken a year later. The goal is to understand how the microbiome in breath differs between the two groups, which could inform future diagnostic approaches.

What this could mean

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

What this could lead to
If successful, this could help identify breath-based markers for COPD, potentially leading to simpler diagnostic tools in the future.
What could go wrong
This is an early observational study, not a treatment trial. It only looks at breath samples and does not test any therapy, so it may not directly change patient care.

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.

Participants

About 240 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2024

Expected to finish

Mar 2029

An estimate. End dates often move.

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.

Who is studied

Subjects with chronic obstructive pulmonary disease (COPD) and no-COPD control subjects

Ages

18 to 70 years

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: For COPD: * Patients with chronic obstructive pulmonary disease * Age: over 18 For non-COPD * Absence of chronic obstructive pulmonary disease * Age: between 18 and 30 years old and between 45 and 70 years old Exclusion Criteria: * Taking certain medications in the month preceding the sample (antibiotics, systemic corticosteroids, immunosuppressants) * Person under guardianship or curatorship * Pregnant or breastfeeding women * Person unable to express his/her opposition, person deprived of liberty * Existence of a chronic infectious pulmonary pathology such as (dilation of the bronchi, cystic fibrosis)

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Conditions

The condition(s) this trial relates to.

chronic obstructive pulmonary disease

As listed by the trial registrant

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

Chronic obstructive pulmonary disease

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Centre Hospitalier Intercommunal de Créteil

    RECRUITING

    Créteil, 94010, France

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