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[Risk Factors and Therapeutic Outcome of Intestinal Acute Graft Versus Host Disease in Acute Leukemia Patients after Haploidentical Peripheral Hematopoietic Stem Cell Transplantation].

OBJECTIVE: To investigate the risk factors and therapeutic outcome of acute graft versus host disease (aGVHD) in patients with acute leukemia after haploidentical peripheral hematopoietic stem cell transplantation.

METHODS: The clinical data of 19 cases of acute leukemia underwent haploidentical hematopoietic stem cell transplanttion during January 2010 and December 2010 were retrospectively analyzed. The effects of patients sex, donor-recipient sex difference, donor age, conditioning regimen, dosage of anti-thymocyte globulin(ATG), mononuclear cell and CD34+ cell counts on the intestinal aGVHD were analyzed by Logistic regression.

RESULTS: Intestinal aGVHD occurred in 5 cases with 1 case at stage II 3 cases at stage III and 1 case at stage IV on the 7th, 22th, 27th, 70th and 154th day after transplantation, respectively. Single factor analysis showed that the patient's sex, donor-recipient sex difference, donor age, dosage of ATG, mononuclear cell and CD34+ cell counts were not related with the occurrence of the intestinal aGVHD, and the conditoning regimen was the risk factor for the intestinal aGVHD. 2 cases among 5 cases with intestinal aGVHD were treated with methylprednisolone at dosage of 1 mg/kg per day, 1 case was treated with methylprednisolone therapy combined with tacrolimus. 2 cases of methylprednisolone-resistance were treated with CD25 monoclonal antibody. Intestinal aGVHD of all patients was improved after the above-mentioned treatment.

CONCLUSION: Conditioning regimen of haploidentical peipheral hematopoieitc stem cell transplantaion has effects on the intestinal aGVHD, which needs to be confirmed by further research.

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