Two Nonmyeloablative HLA-Matched Related Donor Allogeneic Hematopoietic Cell Transplantation Regimens in Patients with Severe Sickle Cell Disease.

Nonmyeloablative (NMA) conditioning is being used increasingly with success in matched related donor (MRD) and alternative donor allogeneic hematopoietic cell transplantation (allo-HCT) in individuals with sickle cell disease (SCD). Advantages include decrease toxicity and applicability in patients otherwise unable to tolerate conditioning regimens due to end-organ damage or age. We aimed to add to published data outcomes of two similar NMA conditioning protocols, termed Protocol 1 (ClinicalTrials.