NCT06128070 2025-10-31Ruxolitinib With Tacrolimus and Methotrexate for the Prevention of Graft Versus Host Disease in Pediatric and Young Adult Patients Undergoing Allogeneic Hematopoietic Cell Transplant for Acute Myeloid Leukemia, Acute Lymphoblastic Leukemia, or Myelodysplastic SyndromeCity of Hope Medical CenterPhase 2 Recruiting40 enrolled