Clinical Study on Modified Allogeneic Hematopoietic Stem Cell Transplantation Regimen for Severe Aplastic Anemia

ObjectiveTo evaluate the safety and efficacy of a modified allogeneic hematopoietic stem cell transplantation regimen in aplastic anemia. Aplastic anemia (AA) is a group of myelo-hemopoietic failure syndromes caused by a variety of etiologies. If not intervened, the average expected survival time is less than half a year.Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is one of the possible cures for this disease. The success rate of treatment for this disease can be further improved under the previous regimen system. The survival rate reported in the literature is 60%-90%. We designed this study to improve the conditioning regimen and optimize the GHVD prevention measures to improve the transplant success rate and prolong patient survival, while minimizing the occurrence of GVHD and reducing the recurrence rate of the disease.30 patients with aplastic anemia were planned to be enrolled.