Abstract

目的分析预处理前多参数流式细胞术(MFC)监测的骨髓微小残留病(MRD)对急性髓系白血病(AML)异基因造血干细胞移植(allo-HSCT)预后的影响,探讨MFC监测MRD在AML allo-HSCT预后评估中的价值。方法回顾性分析2012年4月至2015年3月行allo-HSCT的186例AML患者,预处理前骨髓细胞形态学均达第1次完全缓解(CR1)。采用8色MFC对预处理前骨髓进行MRD检测,任何水平异常均定义为MRD阳性。结果①186例AML患者中151例MRD阴性;35例MRD阳性,其中25例MRD<1%,10例MRD为1%~3%。②2年总体无病生存(DFS)率为80.0%(95% CI 68.5%~92.3%)。与MRD阴性组比较,MRD阳性组DFS率低[62.9%(95% CI 50.6%~75.2%)对88.9%(95%CI 76.6%~100.0%),P<0.001]、复发率高[11.4%(95%CI 4.1%~29.0%)对3.3%(95%CI 0.6%~20.9%),P=0.003]、非复发死亡率(NRM)高[25.7%(95%CI 8.1%~43.3%)对7.9%(95%CI 1.3%~26.5%),P=0.001]。继发性AML组DFS率低(P=0.004),NRM高(P=0.003)。③多因素分析结果显示预处理前MFC检测的MRD阳性是DFS[HR=4.565(95%CI 2.918~9.482),P<0.001]、复发[HR=5.854(95% CI 1.538~22.288),P=0.010]及非复发死亡[HR=3.379(95%CI 1.361~8.391),P=0.009]的独立危险因素。结论预处理前MFC监测的MRD阳性是影响allo-HSCT治疗CR1-AML独立危险因素,MFC监测MRD可用于AML allo-HSCT的预后评估。

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