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

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.