早期评估NPM1突变阳性急性髓系白血病患者残留白血病水平的预后意义  被引量:14

Prognostic significance of early assessment of minimal residual disease in acute myeloid leukemia with mutated NPM1 patients

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作  者:赵婷[1] 主鸿鹄[1] 王婧[1] 贾晋松[1] 杨申淼[1] 江浩[1] 路瑾[1] 陈欢[1] 许兰平[1] 张晓辉[1] 江滨[1] 阮国瑞[1] 王德炳[1] 黄晓军[1] 江倩[1] 

机构地区:[1]北京大学人民医院、北京大学血液病研究所、造血干细胞移植治疗血液病北京市重点实验室,100044

出  处:《中华血液学杂志》2017年第1期10-16,共7页Chinese Journal of Hematology

基  金:国家自然科学基金(81370637、81370639);北京市科技计划(Z141100000214011)

摘  要:目的探讨NPM1突变阳性急性髓系白血病(AML)患者化疗后早期微小残留病(MRD)水平与预后的关系。 方法回顾性分析137例初治成人伴NPM1基因主要突变(A、B、D突变)AML患者的治疗结果,以及化疗后早期时间点MRD(NPM1突变转录本)水平对预后的影响。 结果在137例患者中,男67例(48.9%),中位年龄49(16~67)岁,染色体正常核型107例(78.1%),FLT3-ITD突变阳性57例(41.6%),初诊时NPM1基因突变转录本中位水平84.1%(4.1%~509.9%)。在134例可评估的患者中,115例(85.8%)最终获完全缓解(CR)。多因素分析显示,WBC〈100×109/L(OR=0.3,95% CI 0.1~0.9,P=0.027)和初始诱导治疗为"IA10"方案(OR=0.3,95% CI 0.1~0.8,P=0.015)是获得CR的有利因素。在108例可评估的CR患者中,存活患者中位随访24(2~91)个月,3年无病生存(DFS)和总生存(OS)率分别为48.0%和63.9%。多因素分析显示,FLT3-ITD突变阳性(HR=3.2,95% CI 1.6~6.7,P=0.002)、巩固治疗2个疗程后MRD高水平(NPM1突变转录本水平较治疗前下降〈3个对数级,HR=23.2,95% CI 7.0~76.6,P〈0.001)、未接受异基因造血干细胞移植(allo-HSCT)(HR=2.6,95% CI 1.0~6.6,P=0.045)是影响患者DFS的不利因素;MRD在首次获得CR时高水平(NPM1突变转录本水平下降〈2个对数级,HR=2.5,95% CI 1.0~6.1,P=0.040)和巩固治疗2个疗程后高水平(HR=4.5,95% CI 2.0~10.3,P〈0.001)是影响患者OS的不利因素。进一步分析78例接受化疗(或自体移植)的CR患者,3年DFS和OS率分别为39.7%和59.1%,FLT3-ITD突变阳性和巩固治疗2个疗程后MRD高水平是独立影响患者DFS(HR=3.5,95% CI 1.6~7.6,P=0.002和HR=8.9,95% CI 3.8~20.7,P〈0.001)和OS(HR=2.7,95% CI 1.1~6.9,P=0.036和HR=3.1,95% CI 1.2~8.0,P=0.021)的共同不利因素,此外,首次获得CR时MRD高水平(HR=3.1,95% CI 1.2~8.0,P=0.022)也是影响患者OObjective To explore prognostic significance of early assessment of minimal residual leukemia (MRD) in adult patients with de novo acute myeloid leukemia (AML) with mutated NPM1. Methods The response, NPM1 mutated transcript level after induction chemotherapy and the first 2 cycles of consolidation chemotherapy, disease-free survival (DFS) and overall survival (OS) in 137 patients with AML with NPM1 mutations of A, B and D were retrospectively analyzed. Results Data of 137 patients were collected, 67 were male, the median age was 49 years ( 16-67 years), 107 (78.1%) had normal karyotype, 57 (41.6% ) had positive FLT3-ITD mutation, the median NPM 1 mutated transcript level at diagnosis was 84.1%. Among the 134 evaluable patients, 115 (85.8%) achieved a complete remission (CR). Multivariate analyses revealed that WBC〈 100 x 109/L ( OR=0.3, 95% CI 0.1- 0.9, P=0.027 ) and first induction therapy with "IA10" protocol (OR=0.3, 95% CI 0.1-0.8, P=-0.015) were factors associated with achieving a CR. With a median follow-up period of 24 months (range, 2 to 91 months) in 77 survived CR patients, the probabilities of DFS and OS at 3 years were 48.0% and 63.9%, respectively. Multivariate analyses showed that positive FLT3-ITD (HR=3.2, 95% CI 1.6-6.7, P=0.002), high MRD level after 2 cycles of consolidation chemotherapy (NPM1 mutation transcript level 〈3-log reduction from the individual baseline, HR=23.2, 95% CI 7.0-76.6, P〈0.001 ) and chemotherapy or autologous hematopoietic stem cell transplantation (auto-HSCT) rather than allogeneic HSCT (allo-HSCT) (HR=2.6, 95% CI 1.0- 6.6, P=0.045 ) were the unfavorable factors affecting DFS, high MRD level at the time of achieving the first CR (NPM1 mutation transcript level 〈2-log reduction from the individual baseline, OR=2.5, 95% CI 1.0- 6.1, P=0.040) and after 2 cycles of consolidation chemotherapy (HR=4.5, 95% CI 2.0-10.3, P〈0.001) were the unfavorable factors affecting OS. Furthermore, DFS an

关 键 词:白血病 髓样 急性 基因 NPM1 微小残留病 预后 

分 类 号:R733.71[医药卫生—肿瘤]

 

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