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Phase II trial of HyperCVAD and Dasatinib in patients with relapsed Philadelphia chromosome positive acute lymphoblastic leukemia or blast phase chronic myeloid leukemia

机译:HyperCVAD和达沙替尼在费城染色体复发的急性淋巴细胞白血病或原始细胞期慢性髓细胞性白血病复发患者中的II期试验

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摘要

Dasatinib is a second generation tyrosine kinase inhibitor, with activity in imatinib resistant Ph-positive ALL. We have treated 34 patients with relapsed Philadelphia chromosome positive acute lymphoblastic leukemia (ALL) (n=19) or lymphoid blast phase of chronic myelogenous leukemia (CML-LB) (n=15) with the combination of dasatinib and the hyperCVAD regimen. Prior regimens included hyperCVAD plus imatinib (n=11, 4 had transplant in first CR), other combination chemotherapy (n=12), monotherapy with kinase inhibitors other than dasatinib (n=9), and investigational agents (n=2). Pre-treatment ABL mutations were noted in 10 patients. The overall response rate was 91%, with 24 patients (71%) achieving complete response (CR), and 7(21%) CR with incomplete platelet recovery (CRp). Two patients died during induction and one had progressive disease. Twenty-six patients (84%) achieved complete cytogenetic remission after one cycle of therapy. Overall, 13 patients (42%) achieved complete molecular response, and 11 patients (35%) had major molecular response (BCR-ABL/ABL<0.1%). Nine patients proceeded to allogeneic transplantation. Grade 3 and 4 toxicities included hemorrhage, pleural and pericardial effusions and infections. The median follow-up for patients with CML-LB is 37.5 months (range, 7–70 months) with a 3-yr overall survival of 70%; 68% remained in CR at 3 years. For ALL patients, the median follow-up is 52 months (range, 45–59 months) with a 3-year survival of 26%; 30% remain in CR at 3 years. The combination of HyperCVAD regimen with dasatinib is effective in patients with relapsed Ph-positive ALL and CML-LB.
机译:达沙替尼是第二代酪氨酸激酶抑制剂,对伊马替尼耐药的Ph阳性ALL具有活性。我们用达沙替尼和hyperCVAD方案治疗了34例复发性费城染色体阳性的急性淋巴细胞白血病(ALL)(n = 19)或慢性粒细胞性白血病(CML-LB)淋巴母细胞期(n = 15)。先前的治疗方案包括hyperCVAD加伊马替尼(n = 11,其中4例在首次CR中进行了移植),其他联合化疗(n = 12),使用达沙替尼以外的激酶抑制剂的单药治疗(n = 9)和研究药物(n = 2)。在10名患者中注意到治疗前的ABL突变。总体缓解率为91%,其中24例患者(71%)达到完全缓解(CR),7例(21%)CR未达到完全血小板恢复(CRp)。两名患者在诱导期间死亡,一名患有进行性疾病。一周期治疗后,有26名患者(84%)达到了完全的细胞遗传学缓解。总体而言,有13例患者(42%)达到了完全分子反应,而11例患者(35%)出现了主要分子反应(BCR-ABL / ABL <0.1%)。 9例患者接受了异体移植。 3级和4级毒性包括出血,胸膜和心包积液和感染。 CML-LB患者的中位随访时间为37.5个月(7-70个月),3年总生存率为70%。 3年时有68%的患者保留CR。对于ALL患者,中位随访时间为52个月(45-59个月),3年生存率为26%。 3年时CR保留30%。 HyperCVAD方案与达沙替尼的组合对复发的Ph阳性ALL和CML-LB患者有效。

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