Conditioning regimens for second allo HSCT were combination chemotherapy based on moderate dose Ara C (n=5), Bu (n=3), conventional dose Ara C (n=1) and Flud/Mel (n=1).

• 第二次HSCT时预处理方案包括 :以中剂量阿糖胞苷 (Ara C)为主的联合化疗 5例 ; 以白消安为主的联合化疗 3例 ;