TBI/Flu/Bu/Mel Combined With Secondary UCBT in Patients With Hematological Malignancies Who Relapsed After Allo-HSCT

Compared with peripheral blood stem cell transplantation (PBST), UCBT has a higher transplantation rate, as cord blood stem cells are more primitive. Since the first successful umbilical cord blood transplantation (UCBT) in a child with severe Fanconi anemia reported by Gluckman et al. in France in 1988, cord blood has been widely used as a graft source of hematopoietic stem cells for the treatment of hematological diseases. The first sibling UCBT for leukemia was performed successfully by Professor Yongping Song in China, who played a pioneering role in the development of UCBT for leukemia in China. On the basis of previous research, TBI/Flu/Bu/Mel combined with UCBT is safe and feasible for the treatment of patients with malignant hematological diseases who experienced post-transplant relapse, which has enormous potential to improve patient outcomes.