Blood:新一代测序可用于监测造血干细胞移植后的AML患者的复发风险

2018-08-16 qinqiyun MedSci原创

新一代测序(NGS)已被应用于鉴定临床相关的体细胞突变和区分急性髓系白血病(AML)的亚型。化疗后持续的等位基因负担与较高的复发率相关,但采用异基因造血干细胞移植(HCT)的AML患者的等位基因负担尚未进行纵向检验。现TaeHyung Kim等研究人员对NGS用于监测采用HCT治疗的AML患者的可用性进行评估。研究人员采用靶向基因面板,对104位已进行HCT治疗的AML患者的样本(分别于确诊时、H

新一代测序(NGS)已被应用于鉴定临床相关的体细胞突变和区分急性髓系白血病(AML)的亚型。化疗后持续的等位基因负担与较高的复发率相关,但采用异基因造血干细胞移植(HCT)的AML患者的等位基因负担尚未进行纵向检验。现TaeHyung Kim等研究人员对NGS用于监测采用HCT治疗的AML患者的可用性进行评估。

研究人员采用靶向基因面板,对104位已进行HCT治疗的AML患者的样本(分别于确诊时、HCT前和HCT后21天采集的)进行NGS。NGS在确诊时的90位患者样本中检测出256个突变,并显示这些突变在化疗和HCT后被逐步清除。部分患者的突变在HCT前和HCT后始终存在。大部分HCT后检测到的突变在确诊时都有检测到。复发患者在HCT后21天时的等位基因负担要高于未复发患者。复发患者HCT后21天时的突变均在复发时增多。

通过对突变的等位基因频率(VAF)进行评估发现HCT后21天时的总体VAF(VAF0.2%-Post-HCTD21)与复发风险增高(56.2% vs 16.0%[3年时],p<0.001)和总体存活率更差(36.5% vs 67.0%[3年时],p=0.006)相关。多变量分析表明VAF0.2%-Post-HCTD21是总体存活率(风险比[HR]3.07,p=0.003)和复发发生率(HR 4.75,p<0.001)负性预测因素,独立于校正版欧洲白血病风险因素。

总体上,本研究表明对于AML患者,以NGS为基础的移植后监测是可行的,并可鉴别高复发风险的患者。


原始出处:

TaeHyung Kim, et al. Next-generation sequencing based post-transplant monitoring of acute myeloid leukemia. Blood  2018  :blood-2018-04-848028;  doi: https://doi.org/10.1182/blood-2018-04-848028

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    2018-08-18 俅侠
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    2018-08-16 13718711b3m

    涨知识,学习了,值得借鉴的临床经验,获益匪浅,谢谢分享

    0

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大多数霍奇金淋巴瘤(HL)患者可通过初试治疗得到治愈。另外高剂量的自体造血干细胞移植(AHCT)可治愈额外部分的复发性或难治性HL(rrHL)患者。PET阴性的完全缓解(CR)优于AHCT,对长期病程控制至关重要。有多种补救选择可供对比缓解率,而且可根据合并症和具体情况进行选择。放射治疗也可提高缓解率,对特定的患者来说也是一种重要的治疗选择。AHCT后用BV维持治疗有助于稳定高复发风险患者的病情,