Clinical trial Recruiting at 1 site Phase 3 Interventional Ages 18 to 74

Using fecal microbiota transplantation to maintain remission in Crohn's disease after stopping anti-TNF treatment

Official title: Fecal Microbiota Transplantation in Crohn's Disease as Relay After Anti-TNF Withdrawal

Run by Assistance Publique - Hôpitaux de Paris · NCT04997733 · Data updated 2026-11-12

This study is testing if a stool transplant can help keep people with Crohn's disease in remission after they stop using a certain medication.

More Crohn Disease trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 74 Years
SexAll
Enrollment150 (estimated)
SponsorAssistance Publique - Hôpitaux de Paris
Academic / other
Locations1 site (Paris)
StatusRecruiting
StartedSeptember 22, 2021
Main results expectedMay 22, 2027
Study endsJuly 22, 2029
Registry record updatedAugust 11, 2025
Trial IDNCT04997733 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 to 75 with Crohn's disease in steroid-free clinical remission for at least six months while on anti-TNF treatment.

Probably not a fit

Patients currently experiencing a flare of Crohn's disease or those who do not meet the inclusion criteria will 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

This study evaluates the effectiveness of fecal microbiota transplantation (FMT) as a maintenance treatment for patients with Crohn's disease who are in remission after withdrawing from anti-TNF therapy. The trial aims to restore a healthy gut microbiota in patients whose condition is characterized by an inappropriate immune response and altered gut microbiota. Participants will receive either FMT or a sham treatment to assess the clinical outcomes over a specified period. The study is designed to address the lack of specific recommendations for Crohn's disease patients in remission under anti-TNF agents.

Why it matters

Potential benefit: If successful, this approach could provide a new maintenance treatment option for Crohn's disease patients, potentially improving their quality of life and reducing reliance on immunosuppressive therapies.

How similar studies have gone: While previous studies have explored fecal microbiota transplantation for other conditions, randomized controlled trials specifically for Crohn's disease are lacking, making this approach relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria for patients :

* Age ≥ 18 years and \< 75 years
* Crohn's disease (according to the Lennard-Jones criteria) for at least 6 months
* Patient in steroid-free clinical remission for at least 6 months under anti-TNF agent (no clinical evidence of flare nor change in Crohn's disease specific treatment (anti-TNF, immunosuppressive, …) within 6 months before inclusion) and CDAI \<150 the week before inclusion) and willing to withdraw anti-TNF treatment
* Female of child-bearing age with an active contraception and this during at least the period of treatment (week 52)
* Patient with health insurance
* Informed Written consent

Inclusion Criteria for healthy volunteer donor :

* Age ≥ 18 years and \< 50 years
* 17 kg/m² \< body mass index \< 30 kg/m²
* Regular bowel movement defined as at least 1 stool every other day and maximum 2 stools per day
* Subject with health insurance (AME excepted)
* Informed written consent

Exclusion Criteria for patients :

* Crohn's Disease complication requiring surgical treatment
* Contraindication to colonoscopy or anesthesia
* Pregnancy or breastfeeding during the study (Cf. Addendum 4)
* Diagnosis of Crohn's disease restricted to the upper gastrointestinal tract (oesophagus, stomach, duodenum, jejunum)
* Patient with active perineal disease (defined as evidence of perineal abscess or active draining fistula or presence of seton or presence of perineal ulceration)
* History of more than one small bowel resection or small intestine resection \> 1 meter
* Current stoma (Ileostomy or a colostomy) or stoma in the last 6 months or any other intra-abdominal surgery within 3 months prior to inclusion
* Participation in any other interventional study
* Patient under legal protection

Exclusion Criteria for healthy volunteer donor :

\- For details, please see protocol

Where it's running

  • Gastroenterology Department of Saint Antoine Hospital
    Paris, France
    Recruiting

Study contacts

  • Principal investigator: Harry SOKOL, PU-PH — Assistance Publique - Hôpitaux de Paris
  • Study coordinator: Harry SOKOL, PU-PH
  • Email: harry.sokol@aphp.fr
  • Phone: 01 49 28 31 62

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.