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Study identifier: NCT06355583 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Intestinal Microbiota Transplant Prior to Allogeneic Stem Cell Transplant (MAST) Trial

Condition: Acute Lymphoblastic Leukaemia · Acute Leukemia of Ambiguous Lineage · Chronic Myeloid Leukemia  ·  Sponsor: Imperial College London

PhasePhase 2
Planned participants50
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The goal of this clinical trial is to test the ability to restore gut microbiota to healthier levels in patients with blood cancers scheduled to have stem cell transplant. The main questions it aims to answer are: * Tolerability and acceptability of intestinal microbiota transplantation (IMT) versus placebo (as assessed via patient perspective questionnaires * Changes in gut microbiome diversity across all timepoints * Markers of general health, infective/microbiological and haematological outcomes including, days of fever, admission to intensive care unit, survival, non-relapsed mortality, and incidence of graft-versus-host disease across all time points measured. Participants will be asked at their routine follow up visits to, * Provide stool, urine and blood samples at the scheduled study visits * Complete questionnaires at selected visits * Swallow either Placebo or IMT capsules once at the second study visit which will occur 2 weeks prior to the stem cell transplant (+/-3 days) Researchers will compare IMT capsules and Placebo to investigate the change in gut microbiota diversity.

This description comes directly from the study's public registry record.

Talk to the study team

Clinical Trials Coordinator  ·  +442075943767  ·  mast-trial@imperial.ac.uk

Julian Marchesi  ·  02033126197  ·  j.marchesi@imperial.ac.uk

Always discuss trial participation with your own doctor first.

Locations (8)

University Hospitals Birmingham NHS Foundation TrustBirmingham, England, United KingdomRecruiting
Leeds Teaching Hospital NHS TrustLeeds, England, United KingdomNot Yet Recruiting
University College London Hospitals NHS TrustLondon, England, United KingdomRecruiting
Kings College NHS Foundation TrustLondon, England, United KingdomRecruiting
Imperial College Healthcare NHS TrustLondon, England, United KingdomRecruiting
Royal Mardsen HostpitalLondon, United KingdomRecruiting
Manchester University NHS Foundation TrustManchester, United KingdomNot Yet Recruiting
Manchester University NHS TrustManchester, United KingdomRecruiting

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Source record: clinicaltrials.gov/study/NCT06355583