Poop pills to prevent transplant rejection? new trial tests fecal transplants in blood cancer patients

NCT ID NCT04935684

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

Summary

This study tests whether a fecal microbiota transplant (FMT) can prevent graft-versus-host disease (GvHD) in 150 adults with blood cancers who receive a stem cell transplant. Patients get a single FMT enema within four weeks of transplant. The main goal is to see if FMT improves survival without GvHD or relapse one year later.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Fecal microbiota transplantation (FMT) given as an enema
What this could lead to
If it works, this could offer a simple way to prevent serious complications after stem cell transplants, improving survival and quality of life for blood cancer patients.
What could go wrong
This is a mid-stage trial with 150 people, so results are not yet proven. FMT carries a small risk of infection or side effects, and the benefit may not be seen in all patients.

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

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • Département d'hématologie CAC Rouen

    NOT_YET_RECRUITING

    Rouen, France

  • Hématologie clinique CHU Besançon

    NOT_YET_RECRUITING

    Besançon, France

  • Hématologie clinique Institut de Cancérologie de la Loire

    NOT_YET_RECRUITING

    Saint-Etienne, France

  • Hématologie clinique et thérapie cellulaire Hôpital Haut-Lévèque

    NOT_YET_RECRUITING

    Pessac, France

  • IUC T - Oncopôle

    NOT_YET_RECRUITING

    Toulouse, France

  • Plateforme d'Investigation Clinique / Centre d'Investigation Clinique - Inserm 1405, CHU Gabriel Montpied Clermont-Ferrand

    RECRUITING

    Clermont-Ferrand, France

  • Service Maladies du sang CHU Angers

    NOT_YET_RECRUITING

    Angers, France

  • Service d'Hématologie Adultes Hôpital Necker

    RECRUITING

    Paris, France

  • Service d'Hématologie Centre Hospitalier Lyon Sud

    NOT_YET_RECRUITING

    Lyon, France

  • Service d'Hématologie Clinique CHU Nantes

    NOT_YET_RECRUITING

    Nantes, France

  • Service d'Hématologie Clinique et Thérapie Cellulaire CHU Amiens Picardie - Site Sud

    NOT_YET_RECRUITING

    Amiens, France

  • Service d'Hématologie clinique Hôpital Pitié-Salpêtrière

    NOT_YET_RECRUITING

    Paris, France

  • Service d'Hématologie et de Médecine interne Hôpital Brabois CHRU Nancy

    NOT_YET_RECRUITING

    Nancy, France

  • Service d'hématologie clinique, département de greffe de moelle CHU Nice

    NOT_YET_RECRUITING

    Nice, France

  • Service d'hématologie greffe Hôpital St Louis

    NOT_YET_RECRUITING

    Paris, France

  • Service d'hématologie greffe Hôpital St Louis

    NOT_YET_RECRUITING

    Poitiers, France

  • Service de thérapie Cellulaire et d'Hématologie Clinique Adulte CHU Estaing - Clermont-Ferrand

    NOT_YET_RECRUITING

    Clermont-Ferrand, France

  • Service de thérapie cellulaire et l'hématologie clinique adulte CHU Limoges

    NOT_YET_RECRUITING

    Limoges, France

  • Service des Maladies du sang Hôpital HURIEZ, CHRU de Lille

    NOT_YET_RECRUITING

    Lille, France

  • Service hématologie CHU Grenoble

    NOT_YET_RECRUITING

    Grenoble, France

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