RecruitingPhase 1Biological interventionA Phase 1 Study of Orca-Q in Recipients Undergoing Allogeneic Transplantation for Hematologic MalignanciesThis study will evaluate the safety, tolerability, and efficacy of engineered donor grafts ("OrcaGraft"/"Orca-Q") in participants undergoing allogeneic hematopoietic cell transplant (alloHCT) transplantation for hematologic malignancies.