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在现实世界的数据集中,对胸膜上皮瘤的基因组表征
K Kurokawa1, T Shukuya1, R A Greenstein2
1Department of Respiratory Medicine, Juntendo University Faculty of Medicine and Graduate School of Medicine, Tokyo, Japan.
ESMO open
|September 13, 2023
概括
这项研究分析了罕见胸膜上皮瘤 (TET) 的基因组概况,揭示了CDKN2A和TP53.3的频繁变化. 结果确定了胸膜癌和胸膜瘤的潜在新治疗点.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 癌症研究 癌症研究
背景情况:
- 胸膜上皮瘤 (TETs),包括胸膜癌和胸膜瘤,是罕见的中瘤.
- 由于它们的稀有性,对TET基因组资料的理解有限.
研究的目的:
- 通过使用大型,现实世界的综合性基因组分析数据库,研究TETs的基因组特征.
- 在TETs中识别频繁改变的基因,瘤突变负担 (TMB) 和微卫星不稳定性 (MSI).
主要方法:
- 分析了来自794名患者的数据,分为两个队列:美国的Foundation Medicine Inc. (FMI) 和日本的癌症基因组学和先进治疗中心 (C-CAT).
- 253个基因的综合基因组分析和TMB和MSI状态的评估.
主要成果:
- 在胸腺癌 (FMI队列) 中,经常发生的变化包括CDKN2A (39.9%),TP53 (30.2%) 和CDKN2B (24.6%). 胸腺瘤显示TP53 (7.8%),DNMT3A (6.8%) 和CDKN2A (5.8%) 的变化.
- 高TMB (≥10突变/Mb) 和MSI分别在7.0%和2.3%的胸膜癌和1.6%和0.3%的胸膜癌中观察到.
- C-CAT数据证实了胸腺癌 (CDKN2A,TP53,CDKN2B) 的频繁变化,并确定了胸腺瘤的TSC1,SETD2和LTK变化.
结论:
- 这项研究代表了在TET中调查基因组改变,TMB和MSI的最大队列.
- 在TET中确定了以前未知的潜在治疗点.
- 这些发现为推进在胸膜上皮瘤的治疗开发提供了新的途径.
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