ctDNA改善了接受伊克萨佐米布,列纳利多米德和德克萨米他的复发性/耐药性MM患者的预后预测
Yasunori Kogure1, Hiroshi Handa2, Yuta Ito1,3
1Division of Molecular Oncology, National Cancer Center Research Institute, Tokyo, Japan.
Blood
|March 1, 2024
概括
循环瘤DNA (ctDNA) 突变,特别是TP53和KRAS,在预测复发性/耐药性多发性髓瘤 (RRMM) 的结果方面优于骨髓等离子细胞突变. ctDNA突变的数量提供了一个强大的预后工具.
科学领域:
- 基因组学和精准医学精准医学
- 血液学恶性瘤是什么
- 分子诊断学 分子诊断
背景情况:
- 循环瘤DNA (ctDNA) 中驱动突变的预后影响在复发性/耐药性多发性髓瘤 (RRMM) 中尚不清楚.
- 了解ctDNA的遗传变化对于RRMM个性化治疗策略至关重要.
研究的目的:
- 调查在RRMM患者中检测到ctDNA和骨髓血细胞 (BMPC) 中的驱动突变的预后价值.
- 建立基于ctDNA突变的预后指数,以改善RRMM中的结果预测.
主要方法:
- 来自261名RRMM患者的BMPC和ctDNA的向捕获测序,这些患者接受了ixazomib,lenalidomide和dexamethasone治疗.
- 分析反复突变的基因,包括TP53,KRAS,DIS3,BRAF,NRAS和ATM,与无进展生存 (PFS) 相比.
- 开发和验证一个结合ctDNA突变,血DNA度和临床因素的预后指数.
主要成果:
- 在ctDNA中检测到47个反复突变的基因,TP53突变是最常见的 (59.2%的突变病例).
- 在KRAS,TP53,DIS3,BRAF,NRAS和ATM中ctDNA突变与更糟糕的PFS有关.
- 在6个关键基因中,ctDNA突变的总数强烈预测了PFS,超过了单独的BMPC突变和临床因素.
- 开发的预后指数有效地将患者分为不同的风险组,具有不同的2年PFS率.
结论:
- 与RRMM中的BMPC突变相比,ctDNA突变,特别是它们的数量,提供了更好的预后信息.
- 在治疗期间可以出现TP53和KRAS突变,突出显示了克隆进化的动态性质.
- 新型预后指数为风险分层和指导RRMM治疗决策提供了有价值的工具.
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