MT2023-20: Hematopoietic cell transplant with reduced intensity conditioning and post-transplant cyclophosphamide for severe aplastic anemia and other forms of acquired bone marrow failure.

Although allogeneic hematopoietic cell transplant (HCT) is standard treatment for severe aplastic anemia, the use of the lower intensity conditioning drugs with a personalized dosing strategy, low dose total body irradiation (TBI) with dosing based on age and bone marrow abnormalities, and use of the drug cyclophosphamide early after transplant is a newer approach. We are studying whether this new approach is safer and more effective than our previous approach.