Clinical trial Recruiting at 2 sites Interventional Ages 18 and up

Identifying gut bacteria linked to spondyloarthritis in Crohn's disease patients

Official title: Identification of Fecal Microbiota Biomarkers of Spondyloarthritis in Patients Suffering From Crohn's Disease. Identification de Biomarqueurs de SPondylArthrite Chez Les Patients Atteints de Maladie de CROhn présents Dans le MICrobiote fécal.

Run by Central Hospital, Nancy, France · NCT03983473 · Data updated 2026-11-12

This study is trying to find out if certain gut bacteria are linked to spondyloarthritis in people who have Crohn's disease by comparing them to healthy individuals and those with just one of the conditions.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment240 (estimated)
SponsorCentral Hospital, Nancy, France
Academic / other
Locations2 sites (Nancy, Lorraine and 1 other locations)
StatusRecruiting
StartedNovember 16, 2021
Main results expectedNovember 4, 2027
Study endsDecember 16, 2027
Registry record updatedJune 18, 2026
Trial IDNCT03983473 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older with a diagnosis of Crohn's disease, spondyloarthritis, or both.

Probably not a fit

Patients with a history of colonic resection or those currently taking antibiotics 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

The MICROSPA project aims to analyze the gut microbiota, serum cytokines, and peripheral blood mononuclear cells (PBMC) in patients with Crohn's disease (CD) and/or spondyloarthritis (SpA). It will compare three groups: those with CD alone, those with SpA alone, and those with both conditions, alongside a healthy control group. The study will utilize next-generation sequencing (NGS) to determine the composition of fecal microbiota, including bacteriome, virome, and fungome, to identify potential biomarkers associated with these diseases.

Why it matters

Potential benefit: If successful, this study could lead to the identification of microbiota biomarkers that may improve diagnosis and treatment strategies for patients with Crohn's disease and spondyloarthritis.

How similar studies have gone: While the specific approach of this study may be novel, similar studies have shown promise in identifying microbiota-related biomarkers in other inflammatory conditions.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years.
* Patients will be recruited according to 3 groups:
* Patients with Crohn's disease and axial spondyloarthritis according to the criteria below.
* Patients with Crohn's disease (MC patients) with a diagnosis established according to clinical, biological criteria, radiological, endoscopic and / or histological studies for 3 months. With diagnosis of exclusion of a spondyloarthritis on criteria ASAS and / or New York modified.
* Patients with axial spondyloarthritis (SpA patients) with a diagnosis based on modified ASAS and / or New York criteria with exclusion diagnosis of Crohn's disease.
* Patient with the ability to give free and express informed consent.

Exclusion Criteria:

* History of colonic resection
* Taking antibiotics or colon preparation for colonoscopy within 8 weeks before stool collection (Temporary contraindication = removal possible before colic or first bowel preparation after the start of colonic preparation).
* Ostomy at the time of sampling
* BMI\> 30
* extreme diet
* unbalanced diabetes
* Pregnant woman
* Patient under guardianship, under curatorship or under the protection of justice Contacts/Locations Central Contact

Where it's running

  • Central Hospital
    Nancy, Lorraine, France
    Recruiting
  • Saint Antoine Hospital
    Paris, 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.