Blood:MRD检测对t(8;21)(q22;q22.1)型AML患者复发风险和总体存活率的预测价值

2019-09-26 MedSci MedSci原创

研究人员通过灵敏度高达10-6的RT-qPCR实验,对155位强化治疗的RUNX1-RUNX1T1阳性的AML患者的骨髓(BM)和外周血(PB)样本的可检测的残留病灶(MRD)进行一系列的监测,来评估RUNX1-RUNX1T1转录水平的降低和MRD阴性(MRDneg)的获得对患者预后的影响。

中心点:

对t(8;21)AML患者进行MRD评估可在治疗和随访过程中鉴别患者的复发风险。

MRD阴性是复发风险和总体存活率的最良好的预测指标。

摘要:

研究人员通过灵敏度高达10-6的RT-qPCR实验,对155位强化治疗的RUNX1-RUNX1T1阳性的AML患者的骨髓(BM)和外周血(PB)样本的可检测的残留病灶(MRD)进行一系列的监测,来评估RUNX1-RUNX1T1转录水平的降低和MRD阴性(MRDneg)的获得对患者预后的影响。

1个疗程后,获得MR2.5(RUNX1-RUNX1T1转录水平降低2.5log)和2个疗程后获得MR3.0(RUNX1-RUNX1T1转录水平降低3.0log)与复发风险降低显著相关(p值分别为0.034和0.028)。治疗结束后,BM和PB检查均为MRD阴性是累计复发率和总体存活率的独立的良好预测指标。

最后,在后续RT-qPCR系列分析中,77%的患者的复发预测超过了BM RUNX1-RUNX1T1转录水平的临界值150,84%的患者的复发预测超过了PB RUNX1-RUNX1T1转录水平的临界值50。KIT突变是预测完全缓解率(CR)低和预后不良的显著因子,但在治疗期间,其预后价值不如RUNX1-RUNX1T1转录水平。

所有复发都发生在治疗结束后的一年内,从分子复发到形态学复发的潜伏期非常短,因此需要在这段时间内重复进行MRD评估。

原始出处:

Frank G. Rücker, et al.Measurable Residual Disease Monitoring in Acute Myeloid Leukemia with t(8;21)(q22;q22.1): Results of the AML Study Group.Blood 2019 :blood.2019001425; doi: https://doi.org/10.1182/blood.2019001425

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    2020-07-09 yangfl06
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    2019-09-28 yaanren
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