从现实世界的数据集中对小肠癌的基因组分析确定了具有可操作变化的子组
Hiroyuki Takeda1, Hiroyuki Yamamoto2,3, Ritsuko Oikawa2
1Department of Clinical Oncology, St Marianna University School of Medicine, Kawasaki, Japan.
JCO precision oncology
|August 8, 2024
概括
综合的基因组分析显示,在晚期小肠癌中,经常出现TP53和KRAS变异. 在22.3%的患者中发现了可药物治疗的变化,为向治疗提供了洞察力.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 精准医学是一门精准的医学.
背景情况:
- 小肠癌是罕见的,其基因组景观在晚期仍未得到充分描述.
- 综合基因组分析 (CGP) 是一种临床工具,但这种癌症类型的现实数据有限.
研究的目的:
- 使用RWD来描述晚期小肠癌的基因组景观.
- 调查分子定义和年龄分层子组之间临床相关变化的差异.
主要方法:
- 一项协作生物标志物研究分析了来自1364名患有晚期小肠癌且接受CGP的患者的RWD.
- 患者按年龄,微卫星不稳定性 (MSI) 状态,瘤突变负担 (TMB) 状态和基因变异分层.
- 混合捕获被用来分析至少324个与癌症相关的基因.
主要成果:
- 经常发生的改变包括TP53 (59.8%),KRAS (54.8%),APC (27.7%) 和CDKN2A (22.4%).
- 在22.3%的患者中发现了可用药物的基因组改变,包括BRAF V600E,BRCA1/2,ERBB2放大,KRAS G12C,NTRK融合,MSI高和TMB高.
- 40岁以下的患者与老年患者 (28.7%) 相比,APC突变频率显著降低 (10.4%).
结论:
- 来自临床小组测试的RWD提供了小肠癌小组中的基因组景观的全面视图.
- 这些发现为开发未来针对高级小肠癌的向治疗提供了宝贵的见解.
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