解读癌症抵抗机制:MATCH-R研究的最终报告,重点关注分子驱动因素和PDX发展
Damien Vasseur1,2, Ludovic Bigot3, Kristi Beshiri4
1Medical Biology and Pathology Department, Gustave Roussy, Villejuif, France.
Molecular cancer
|October 4, 2024
概括
MATCH-R研究表明,瘤活检的分子分析可以识别转移性癌症患者的抵抗机制. 基于这些发现的量身定制治疗将临床益处延长了11个月的中位数.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 翻译医学是一种翻译医学.
背景情况:
- 了解瘤抵抗机制对于推进癌症疗法至关重要.
- MATCH-R试验 (NCT02517892) 使用瘤活检的分子分析前性地表征了耐药机制.
- 本报告详细介绍了2015-2022年间的基因组分析,重点是针对性疗法.
研究的目的:
- 通过对新鲜瘤活检的分子分析来表征瘤抵抗机制.
- 在转移性癌症患者中确定可向的驱动因素和抵抗性改变.
- 评估图像导向活检和患者衍生异种移植 (PDX) 的可行性,以指导个性化治疗.
主要方法:
- 从857名耐药转移性患者中收集了1,120个活检.
- 在瘤活检上进行了针对性下一代测序 (NGS),全外体测序和RNA测序.
- 来自瘤碎片的确定的患者衍生异种移植 (PDX) 用于进一步分析和治疗验证.
主要成果:
- 在30.9%的患者中确定了分子向驱动因素,EGFR,FGFR2/3,ALK,BRAF和KRAS是常见的变化.
- 在接受向治疗而进展的患者中,41.1%的患者没有确定机制,32.0%的患者有向耐药性,25.1%的患者有绕道耐药性.
- 针对45%具有抗药性机制的患者进行量身定制的治疗,导致临床益处的中位数延长了11个月;成功建立了136个PDX模型.
结论:
- 图像引导的瘤活检是可行的,以表征先前治疗的转移性患者的耐药性机制.
- 建立PDX模型是研究瘤生物学和验证治疗策略的有效方法.
- 分子分析和随后的个性化疗法可以改善转移性癌症的结果.
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