MT2005-25 Hematopoietic Stem Cell Transplantation in the Treatment of Infant Leukemia

To determine the incidence of engraftment (defined as achieving donor derived neutrophil count >500/uL by day 42) in young children with leukemia or myelodysplastic syndrome undergoing a partially matched single unit umbilical cord blood transplant (UCBT) after a myeloablative preparative regimen consisting of busulfan, melphalan and fludarabine.