Gut bacteria may hold key to why arthritis drugs stop working in kids

NCT ID NCT04540432

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study is looking at how the gut bacteria (microbiome) change in children with juvenile spondyloarthritis as they receive different treatments. Researchers will collect stool and blood samples from 25 children over several months to see if certain bacteria affect how well the drugs work. The goal is to understand why some children stop responding to treatment, which could help doctors choose better therapies in the future.

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 study could help doctors understand why some children stop responding to arthritis treatments, potentially leading to better personalized care.
What could go wrong
This is a very small, early pilot study with only 25 participants. It is designed to observe and describe, not to test a new treatment, so it may not lead to any direct changes in care.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • APHM, Hopital Nord

    RECRUITING

    Marseille, France

  • Hopital des enfants, CHU de Toulouse

    NOT_YET_RECRUITING

    Toulouse, France

  • Montpellier University Hospital, Arnaud de Villeneuve Hospital

    RECRUITING

    Montpellier, Hérault, 34295, France

  • Nîmes University Hospital

    RECRUITING

    Nîmes, Gard, 30029, France

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