Haploidentical Versus Matched Sibling Donor Hematopoietic Stem Cell Transplantation for Adult Patients with Relapsed/Refractory Acute Lymphoblastic Leukemia: A Study from the Acute Leukemia Working Party of the European Society for Blood and Marrow Transplantation

Background: Outcomes of Haploidentical transplantation (HaploSCT) in adult patients (pts) with acute relapsed/refractory lymphoblastic leukemia (Rel/Ref ALL) are comparable to unrelated donor transplants. We have recently reported that results of HaploSCT for ALL in remission are not significantly different from those receiving transplants from matched sibling donors (MSD). However, results may differ in ALL pts with active disease.