[Comparison of efficacy of first-line administration of generic dasatinib or imatinib in patients with Philadelphia chromosome positive acute lymphoblastic leukemia treated by hematopoietic stem cell transplantation].

To investigate the efficacy of first-line administration of generic dasatinib or first-generation TKI (imatinib) in patients with Philadelphia chromosome positive acute lymphoblastic leukemia (Ph(+) ALL) treated by hematopoietic stem cell transplantation (HSCT). Clinical features and prognoses of 63 newly diagnosed Ph(+) ALL patients from Jan 2014 to June 2017 treated by HSCT combined with first-line administration of generic dasatinib or imatinib were retrospective analyzed. Of 63 Ph(+) ALL patients, 31 cases were administered generic dasatinib, and the other 32 ones imatinib. Complete remission (CR) rates at the fourth week of induction therapy in generic dasatinib and imatinib groups were 96.8% and 93.8% (=1.000) , respectively. Meanwhile major molecular response (MMR; BCR-ABL/ABL reduce 3log) rates were 41.9% and 43.8% ((2)=0.021, =0.884), respectively. Relapse rates before transplantation were 6.5% and 12.5% (=0.672), respectively. MMR rates before HSCT were 83.9% and 68.8% ((2)=1.985, =0.159), respectively. The 20-monthes overall survival (OS) rates of generic dasatinib and imatinib groups were 95.5% and 76.5% ((2)=0.990, =0.320) respectively; 20-monthes event-free survival (EFS) rates were 93.5% and 61.4% ((2)=5.926, =0.015), respectively. Statistically significant differences of EFS were reached. Multiple factors analysis showed that generic dasatinib (=0.201, 95% 0.045-0.896, =0.035) and MMR before transplantation (=0.344, 95% 0.124-0.956, =0.041) could improve EFS. First-line administration of generic dasatinib could improve EFS for Ph(+)ALL patients treated by HSCT when compered with imatinib.