CF Drug's hidden impact on gut and lung bugs revealed

NCT ID NCT05937815

First seen Jun 22, 2026 · Last updated Jun 23, 2026 · Updated 1 time

Summary

This study tracks 253 cystic fibrosis patients starting a new drug combination (elexacaftor/tezacaftor/ivacaftor). Researchers collect sputum, stool, and blood samples at the start, 6 months, and 1 year to see how the drug changes bacteria and inflammation in the lungs and gut. The goal is to understand the drug's full effects beyond just breathing.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • AP-HM CRCM pédiatrique

    RECRUITING

    Marseille, France

    Contact

  • AP-HP CRCM Robert debré

    RECRUITING

    Paris, France

    Contact

  • AP-PH Hopital Cochin service de pédiatrie

    RECRUITING

    Paris, France

    Contact

  • APHP Hopital Necker

    RECRUITING

    Paris, France

    Contact

  • CHRU de Lille CRCM Pédiatrique

    RECRUITING

    Lille, France

    Contact

  • CHU de Bordeaux - CRCM pédiatrique

    RECRUITING

    Bordeaux, France

    Contact

  • CHU de Grenoble Alpes CRCM pédiatrique

    RECRUITING

    Grenoble, France

    Contact

  • CHU de Limoges CRCM Limousin

    RECRUITING

    Limoges, France

    Contact

  • CHU de Montpellier

    RECRUITING

    Montpellier, France

    Contact

  • CHU de Nancy

    RECRUITING

    Nancy, France

    Contact

  • CHU de Nice

    RECRUITING

    Nice, France

    Contact

  • CHU de Rouen

    RECRUITING

    Rouen, France

    Contact

  • CHU de Toulouse

    RECRUITING

    Toulouse, France

    Contact

  • Fondation Ildys, Roscoff Centre Hélio Marin - Clinique "Mucoviscidose"

    RECRUITING

    Roscoff, France

    Contact

  • Hospices Civils de Lyon Service de pédiatrie, allergologie et mucoviscidose

    RECRUITING

    Lyon, France

    Contact

What this could mean

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

Active substance

Elexacaftor/Tezacaftor/Ivacaftor

What this could lead to

If successful, this could reveal how the drug improves gut and lung health in cystic fibrosis, guiding better future treatments.

What could go wrong

This is an observational study, not a treatment trial. It cannot prove the drug works or is safe, and results may not apply to all patients.

Conditions

The condition(s) this trial relates to.

Cystic Fibrosis Inflammation

As listed by the trial registrant

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