Characterizing gut microbiota in chronic gastrointestinal diseases

The Role of Gut Microbiota in Chronic GI Diseases: A Pilot Study

Observational McMaster University · NCT06532110

This study is trying to understand the gut bacteria of people with chronic digestive issues like IBS, IBD, and celiac disease to see how it affects their symptoms and explore new treatment options.

Quick facts

Study typeObservational
Enrollment260 (estimated)
Ages18 Years to 75 Years
SexAll
SponsorMcMaster University Academic / other
Locations1 site (Hamilton, Ontario)
Trial IDNCT06532110 on ClinicalTrials.gov

What this trial studies

This study aims to characterize the microbiota of patients suffering from various chronic gastrointestinal disorders, including IBS, IBD, and celiac disease. It involves collecting data through questionnaires and biological samples such as stool, blood, and tissue during endoscopy or colonoscopy. Additionally, a translational phase will utilize germ-free mice colonized with feces from these patients to compare symptoms, microbiota composition, and histological changes in both the gut and brain. The goal is to understand the role of microbiota in these diseases and explore potential treatment implications.

Who should consider this trial

Good fit: Ideal candidates include individuals diagnosed with IBD, celiac disease, IBS, severe motility disorders, or functional diarrhea.

Not a fit: Patients who have taken antibiotics or probiotics in the last month may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to the identification of new biomarkers and treatment strategies for chronic gastrointestinal disorders.

How similar studies have performed: Other studies have shown promise in understanding the microbiota's role in gastrointestinal diseases, suggesting that this approach could yield valuable insights.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Diagnosis of IBD, active celiac disease (aTTG positive + endoscopic view and histological findings compatible), IBS (Rome IV criteria or physician diagnosis) severe motility disorders (severe constipation, severe functional dyspepsia) gluten sensitivity (IBS diarrhea predominant with positive anti gliadin antibodies and negative aTTG), functional diarrhea (Rome IV criteria), anal fissure and/or fistula or non-disease control individual or 1st degree family member of celiac patient.
* Willingness to participate
* Signed Informed Consent

Exclusion Criteria:

* Antibiotics in the last month
* Probiotics in the previous month

Where this trial is running

Hamilton, Ontario

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Microbiotamicrobiotachronic gastrointestinal disorderscolonizationmetabolites
Last reviewed 2026-06-09 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.