Clinical trial Recruiting at 1 site Interventional Ages 18 to 70

Fecal microbiota transplant for adults with refractory irritable bowel syndrome

Official title: Efficacy and Safety Evaluation of Fecal Microbiota Transplantation in Irritable Bowel Syndrome

Run by Shanghai Zhongshan Hospital · NCT05740319 · Data updated 2026-11-12

This project will try monthly fecal microbiota transplants—given as oral capsules or through a tube to the small intestine—to see if symptoms improve in adults (18–70) with IBS who haven't responded to at least three treatments.

More Irritable Bowel Syndrome trials

Quick facts

Study typeInterventional
Ages18 Years to 70 Years
SexAll
Enrollment102 (estimated)
SponsorShanghai Zhongshan Hospital
Academic / other
Locations1 site (Shanghai, Shanghai Municipality)
StatusRecruiting
StartedJune 10, 2023
Main results expectedDecember 31, 2026
Study endsDecember 31, 2026
Registry record updatedFebruary 25, 2026
Trial IDNCT05740319 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18–70 who meet Rome IV criteria for IBS and have failed at least three conventional therapies, without red-flag symptoms, are the intended participants.

Probably not a fit

Patients who are pregnant or lactating, have immunodeficiency or uncontrolled systemic disease, recent antibiotic or probiotic use, severe psychiatric illness, or inability to comply with follow-up are unlikely to benefit or be eligible.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a prospective, single-arm interventional protocol enrolling adult patients with refractory IBS who meet Rome IV criteria. Participants receive fecal microbiota transplantation from screened healthy donors three times at monthly intervals, delivered either as oral capsules or by nasojejunal tube into the duodenum. Symptom severity, gastrointestinal symptoms, anxiety, depression, and quality of life are measured with validated scales at baseline, after FMT, and at 1, 2, 3 and 4 months post-treatment, and fecal samples are collected at each visit. Primary endpoints are improvement in IBS-SSS score and global symptoms after the three treatments, and secondary endpoints include GSRS changes, emotional and quality-of-life measures, and changes in fecal microbiota composition.

Why it matters

Potential benefit: If effective, this approach could reduce IBS symptom severity and improve patients' quality of life and emotional well-being.

How similar studies have gone: Previous randomized and observational studies of FMT for IBS have produced mixed results, with some patients showing symptom improvement but overall inconsistent efficacy across trials.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients who fulfilled the Rome IV criteria for the diagnosis of IBS, aged 18-70 years;
* Patients who have experienced failure of at least 3 conventional therapies for IBS;
* Absence of red flags such as weight loss, hematochezia;

Exclusion Criteria:

* Pregnant, planning pregnancy or lactating;
* Psychiatric disorder or unable to cooperate with treatment and follow-up visit;
* Immunodeficiency or treatment with immune-modulating medication;
* Use of probiotics within the previous 3 months or treatment with antibiotics within 1 month prior to study entry;
* Having undergone any abdominal surgery, with the exception of appendectomy, cholecystectomy, caesarean section and hysterectomy;
* Presence of uncontrolled diabetes, hypertension, thyroid disease or other systemic disease;
* Presence of severe diseases related to heart, brain, kidney and lung or concomitant malignancies;

Where it's running

  • Zhongshan Hospital, Fudan University
    Shanghai, Shanghai Municipality, China
    Recruiting

Study contacts

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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.