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Stool test could stop Crohn's Flare-Ups after surgery

NCT ID NCT06972901

Disease control Sponsor: University Hospital, Clermont-Ferrand Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a new strategy to prevent Crohn's disease from returning after bowel surgery. Instead of waiting 6 months for a colonoscopy, doctors will use a simple stool test at 3 months to decide if treatment needs to be stepped up earlier. The goal is to reduce the number of people who develop new ulcers in the intestine by 6 months after surgery.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 42 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2025

Expected to finish

Mar 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients with an established diagnosis of CD according to ECCO guidelines * Adult Crohn's disease (age ≥ 18 years) * Having undergone ileal, colonic, or ileocolonic resection without residual macroscopic lesions * With an anastomosis that can be reached by ileocolonoscopy * With at least one of the following risk factors for endoscopic POR: active smoking, previous intestinal resection (before the current resection), length of resected small bowel \> 30 cm, fistulizing phenotype (B3 according to the Montreal classification), exposure to at least two biotherapies before surgery * No contraindication to ustekinumab treatment * Patient capable of giving consent * Patient covered by the French healthcare system Exclusion Criteria: * Permanent stoma * Total colectomy * Uncontrolled postoperative infectious complication * Pregnant or breastfeeding women: a pregnancy test will be performed for women of childbearing age * Refusal to participate in the study * Persons deprived of their liberty by judicial or administrative decision * Minors * Vulnerable protected adults (under guardianship, curatorship, or legal protection)

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Conditions

The condition(s) this trial relates to.

Crohn disease

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Crohn disease (CD) Ileocolic resection Post-endoscopic operative reccurence

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    8 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • AP-HM

    NOT_YET_RECRUITING

    Marseille, France

  • CHU d'Amiens

    NOT_YET_RECRUITING

    Amiens, France

  • CHU de Clermont-Ferrand

    RECRUITING

    Clermont-Ferrand, France

  • CHU de Lille

    NOT_YET_RECRUITING

    Lille, France

  • CHU de Montpellier

    NOT_YET_RECRUITING

    Montpellier, France

  • CHU de Toulouse

    NOT_YET_RECRUITING

    Toulouse, France

  • Chu de Nice

    NOT_YET_RECRUITING

    Nice, France

  • HCL

    NOT_YET_RECRUITING

    Lyon, France

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