Exploring gut microbiota changes in patients with steroid refractory GvHD receiving MaaT013

PrOspective inteRventional Study Exploring the mIcrobiota recolONization in Steroid-Refractory Graft-versus-Host Disease Patients Receiving MaaT013

Not applicable Interventional MaaT Pharma · NCT05017688

This study is testing if a special enema called MaaT013 can help improve gut health and the immune system in adults with severe graft-versus-host disease that doesn't respond to steroids.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment40 (estimated)
Ages18 Years to 85 Years
SexAll
SponsorMaaT Pharma Industry-sponsored
Locations9 sites (Amiens and 8 other locations)
Trial IDNCT05017688 on ClinicalTrials.gov

What this trial studies

This study aims to investigate how the administration of MaaT013, a microbiome-based enema formulation, affects the gut microbiota composition and immune system in patients suffering from steroid refractory acute graft-versus-host disease (GvHD). Patients aged 18 and older with Grade III-IV GvHD involving the gut will receive MaaT013 as part of a named-patient use program. Blood and stool samples will be collected at each visit to monitor changes and assess the treatment's impact. The study is designed to provide insights into the potential benefits of microbiota recolonization in this patient population.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with Grade III-IV acute GvHD involving the gut who are receiving MaaT013.

Not a fit: Patients who are pregnant, breastfeeding, or unable to provide informed consent due to vulnerability will not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could improve outcomes for patients with severe GvHD by restoring gut microbiota balance.

How similar studies have performed: Other studies have shown promise in using microbiome-based therapies for GvHD, suggesting a potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient ≥18 years old with Grade III-IV aGVHD with gut involvement undergoing treatment with MaaT013 through named-patient use program ATUn / Early Access
* Signature of informed and written consent by the subject or by the subject's legally acceptable representative for patients under guardianship or trusteeship.
* Affiliated or recipient from a social security scheme

Exclusion Criteria:

* Pregnancy and breastfeeding
* Vulnerable patients such as: minors, persons deprived of liberty, persons in Intensive Care Unit unable to provide informed consent prior to the intervention.

Where this trial is running

Amiens and 8 other locations

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.
Conditions Intestinal GVHDSteroid Refractory GVHDgut microbiotafecal microbiotherapyintestinal GvHD
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.