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National registry for fecal microbiota transplantation

Fecal Microbiota Transplant National Registry

Observational American Gastroenterological Association · NCT03325855

This study is collecting information from 4,000 patients who are getting fecal microbiota transplants to see how well the treatment works and what effects it has over time.

Quick facts

Study typeObservational
Enrollment4000 (estimated)
SexAll
SponsorAmerican Gastroenterological Association Academic / other
Locations53 sites (Phoenix, Arizona and 52 other locations)
Trial IDNCT03325855 on ClinicalTrials.gov

What this trial studies

This observational registry aims to enroll 4,000 patients undergoing fecal microbiota transplantation (FMT) across 75 sites in North America. It will collect detailed information on FMT methodologies, recipient characteristics, and indications for FMT. Patients will be followed for up to 10 years post-procedure, with regular assessments of safety and effectiveness conducted through healthcare provider follow-ups and direct patient communication. The goal is to gather comprehensive data to better understand the short and long-term outcomes of FMT.

Who should consider this trial

Good fit: Ideal candidates include individuals who are receiving fecal microbiota transplantation or other gut-related microbiota products and can provide informed consent.

Not a fit: Patients who are incarcerated will not be eligible for this study and therefore may not benefit from its findings.

Why it matters

Potential benefit: If successful, this registry could provide valuable insights into the safety and effectiveness of fecal microbiota transplantation for patients with Clostridium difficile infection and other gut-related issues.

How similar studies have performed: Other studies on fecal microbiota transplantation have shown promising results, indicating that this approach is gaining traction and is supported by previous findings.

Eligibility criteria

Show full inclusion / exclusion criteria 
Inclusion Criteria:

* Recipient Inclusion Criteria

  * Ability to give informed consent
  * Receiving FMT or other gut-related microbiota product within 90 days after providing consent
  * Access to internet and/or telephone
* Donor Inclusion

  * Ability to give informed consent
  * Providing stool sample for FMT

Exclusion Criteria:

* Incarceration

Where this trial is running

Phoenix, Arizona and 52 other locations

+3 more sites — see ClinicalTrials.gov for the full list.

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.
View on ClinicalTrials.gov → Find more trials like this →
Conditions Fecal Microbiota TransplantationClostridium Difficile InfectionGut MicrobiomeFMTCDIFecal Matter Transplant
Last reviewed 2026-06-13 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.