NCT03128034 2025-12-19211^At-BC8-B10 Before Donor Stem Cell Transplant in Treating Patients With High-Risk Acute Myeloid Leukemia, Acute Lymphoblastic Leukemia, Myelodysplastic Syndrome, or Mixed-Phenotype Acute LeukemiaFred Hutchinson Cancer CenterPhase 1/2 Recruiting75 enrolled