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Fecal Microbiota Transplantation for the Prevention of Acute Graft Versus Host Disease in Adults Undergoing Allogeneic Hematopoietic Cell Transplantation

Fecal Microbiota Transplantation to Prevent Acute Graft-Versus-Host Disease After Allogeneic Hematopoietic Cell Transplantation

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06026371
Enrollment
138
Registered
2023-09-07
Start date
2023-12-12
Completion date
2027-03-31
Last updated
2026-01-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute Graft Versus Host Disease, Hematopoietic and Lymphatic System Neoplasm

Brief summary

This randomized placebo-controlled double-blind phase II trial tests whether fecal microorganism (microbiota) transplantation prevents severe acute graft versus host disease in adults undergoing allogeneic hematopoietic cell transplantation (HCT). Fecal microbiota transplantation involves receiving processed fecal material orally after allogeneic HCT in order to establish a healthy gut microbiota. Gut microbiota undergoes major alterations during allogeneic HCT because of antibiotic exposures, nutritional changes, and chemotherapy administration. Establishing a healthy gut microbiota via fecal transplantation may help prevent acute graft versus host disease in patients undergoing allogeneic HCT.

Detailed description

OUTLINE: The first 12 patients are assigned to group I, remaining patients are randomized to 1 of 2 groups. GROUP I: Patients receive fecal microbiota capsules orally (PO) once daily (QD) for 7 days starting at the time of neutrophil engraftment and discontinuation of anti-bacterial antibiotics. GROUP II: Patients receive placebo PO QD for 7 days starting at the time of neutrophil engraftment and discontinuation of anti-bacterial antibiotics. After completion of study intervention, patients are followed up monthly until 12 months post-allogeneic HCT.

Interventions

DRUGPlacebo

Given PO

Sponsors

Fred Hutchinson Cancer Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Investigators, treating physicians, staff, and subjects are blinded to study arm assignment (FMT vs. placebo).

Intervention model description

The first 12 patients are assigned to the treatment group, remaining patients are randomized to treatment or placebo group.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Age \>= 18 * Signed informed consent * Able to take oral medications * Planned T-replete allogeneic hematopoietic cell transplantation for any indication. History of prior transplantation is allowed * Planned GVHD prophylaxis using one of the following regimens: * Calcineurin inhibitor (tacrolimus or cyclosporine) plus methotrexate * Calcineurin inhibitor (tacrolimus or cyclosporine) plus mycophenolate mofetil (MMF) * Sirolimus plus cyclosporine plus MMF * Post-transplant cyclophosphamide plus calcineurin inhibitor (with or without MMF or sirolimus) * One of the following HCT donor types: * Human leukocyte antigen (HLA)-matched sibling donor * 9/10 or 10/10 HLA-matched unrelated donor * HLA- haploidentical donor * Cord blood * Willing to use at least 1 accepted method of contraception until day 180 after transplant and agree to not donate eggs/sperm for 180 days after * Not pregnant or breast feeding * ELIGIBILITY CRITERIA FOR RANDOMIZATION: Absolute neutrophil count (ANC) recovery to \> 0.5 x 10\^9/L from nadir, without ongoing growth factor support * ELIGIBILITY CRITERIA FOR RANDOMIZATION: Discontinuation of all antibacterial antibiotics (except those used for Pneumocystis jiroveci prophylaxis) for 2 days * ELIGIBILITY CRITERIA FOR RANDOMIZATION: Resolution of all acute toxicities (other than anemia and thrombocytopenia) to Common Terminology Criteria for Adverse Events (CTCAE) grade 2 or lower * ELIGIBILITY CRITERIA FOR RANDOMIZATION: Ability to swallow capsules * ELIGIBILITY CRITERIA FOR RANDOMIZATION: No grade II-IV acute GVHD * ELIGIBILITY CRITERIA FOR RANDOMIZATION: No moderate to severe chronic GVHD * ELIGIBILITY CRITERIA FOR RANDOMIZATION: No concurrent antibiotics to treat infections. Prophylactic antiviral and antifungal antibiotics used to prevent infections are allowed

Exclusion criteria

* Severe food allergy in the form of anaphylaxis or attributable symptoms requiring hospitalization * History of chronic aspiration or conditions predisposing to aspiration (e.g. neuromuscular disorders) * Receiving or planned to receive other experimental agents (including ex vivo T-cell depletion) to prevent GVHD. The use of other experimental agents is prohibited unless approved by the principal investigator (PI) of the other trial

Design outcomes

Primary

MeasureTime frameDescription
Grade III-IV acute graft versus host disease (GVHD)Up to 6 months post hematopoietic cell transplantation (HCT)Based on International Blood and Marrow Transplantation Research (IBMTR) criteria and measured as a probability

Secondary

MeasureTime frameDescription
Clostridium difficile diarrheaUp to 180 days post HCTBased on a positive stool assay in the consistent clinical setting (e.g. diarrhea) and measured as a probability
Chronic GVHDAt 12 months post-HCTDiagnosis based on the National Institutes of Health Consensus Criteria (PMID: 25529383)
Grade II-IV acute GVHDUp to 180 days post HCTBased on IBMTR criteria and measured as a probability
Non-relapse mortalityUp to 180 days post HCTDeath not due to relapse/progression of the underlying hematologic disorder and measured as a probability

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026