Clinical trial Recruiting at 1 site Observational Ages 18 to 70

Examining the microbiological diversity in exhaled air of COPD and non-COPD patients

Official title: Study of Microbiological Diversity in Exhaled Air in Adult Subjects With Chronic Obstructive Pulmonary Disease (COPD) and Subjects Free of COPD

Run by Centre Hospitalier Intercommunal Creteil · NCT05437198 · Data updated 2026-11-12

This study is trying to see how the germs in the breath of people with COPD compare to those without the condition to better understand their health.

More Chronic Obstructive Pulmonary Disease trials

Quick facts

Study typeObservational
Ages18 Years to 70 Years
SexAll
Enrollment240 (estimated)
SponsorCentre Hospitalier Intercommunal Creteil
Academic / other
Locations1 site (Créteil)
StatusRecruiting
StartedMarch 26, 2024
Main results expectedMarch 2028
Study endsMarch 2029
Registry record updatedJune 16, 2026
Trial IDNCT05437198 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults over 18 with a diagnosis of COPD or healthy individuals aged 18-30 and 45-70 without COPD.

Probably not a fit

Patients with chronic infectious pulmonary conditions or those on specific medications may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to analyze the microbiological diversity present in the exhaled air of patients with chronic obstructive pulmonary disease (COPD) and those without the condition. Participants will be recruited during medical visits in the Departments of Pneumology and Occupational and Environmental Pathologies, where their clinical data, health status, and smoking history will be collected. Exhalation samples will be taken from different groups based on their health status, age, and smoking habits, with a follow-up collection scheduled for one year later.

Why it matters

Potential benefit: If successful, this study could enhance understanding of the microbiome's role in COPD, potentially leading to improved diagnostic and therapeutic strategies.

How similar studies have gone: While studies on microbiological diversity in respiratory conditions exist, this specific approach focusing on exhaled air in both COPD and non-COPD patients is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
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)

Where it's running

  • Centre Hospitalier Intercommunal de Créteil
    Créteil, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.