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A simple breath test could spot lung infections in minutes

NCT ID NCT07685275

Diagnosis Sponsor: Hopital Foch Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 06, 2026 · Last updated Jul 07, 2026 · Updated 1 time

Summary

This study investigates whether a real-time breath analysis device can quickly and non-invasively diagnose lower respiratory tract infections. Researchers will collect breath samples from 450 patients with suspected infections or chronic airway colonization and analyze volatile organic compounds (VOCs) using proton transfer reaction-mass spectrometry. The goal is to see if unique breath signatures can distinguish between infection, colonization, and no infection, and identify specific pathogens.

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 provide a rapid, painless breath test to diagnose respiratory infections at the bedside, replacing slower or invasive methods.
What could go wrong
This is an early-stage diagnostic study; the breath signatures may not be accurate enough in real-world settings, and the device may not be widely adopted.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 450 people

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

Expected to start

Jun 2026

An estimate. Start dates often move.

Expected to finish

Dec 2027

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.

Ages

1 month 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: * Patient aged \> 1 month, either spontaneously breathing or intubated and mechanically ventilated * Having suspected lower respiratory tract infection (dyspnea or tachypnea or cough or sputum production or fever or decreased breath sounds on auscultation or any other suspicious diagnostic test (imaging, blood analysis)) or previously documented chronic airway colonization * Willing to provide informed consent and affiliated with a health insurance system Exclusion Criteria: * Patients or representative unable to provide informed consent * Persons under guardianship or curatorship or persons deprived of liberty

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Conditions

The condition(s) this trial relates to.

respiratory tract infectious disorder

As listed by the trial registrant

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

Respiratory tract infections (RTI)

How to take part

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

  1. The places running it

    3 sites. 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

  • Hôpital Foch

    Suresnes, 92150, France

  • Hôpital Necker

    Paris, 75015, France

  • Hôpital Raymond Poincaré

    Garches, 92380, France

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