在患有胆管癌的年轻和老年患者中,基因组分析,预后和潜在的干预目标
Junhua Wang1, Yaoting Shi2, Jianbo Chen3,4
1Department of Biliary-Pancreatic Surgery, The First People's Hospital of Foshan, Foshan, China.
Cancer biology & therapy
|June 20, 2023
概括
年龄较大的胆管癌 (CCA) 患者表现出更多的KRAS和TERT变异,与较差的生存率有关. 大约三分之一的CCA患者具有可用于向治疗的可操作突变,特别是年轻女性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 胆管癌 (CCA) 的预后随年龄而变化,但分子驱动因素尚不清楚.
- 了解与年龄相关的分子差异是CCA精准医学的关键.
- 干预目标在年轻和老年CCA患者之间有所不同.
研究的目的:
- 调查老年CCA患者预后不佳背后的分子机制.
- 为了比较年轻 (≤45岁) 和老年 (>45岁) CCA队列之间的遗传改变和可操作的目标.
- 用外部数据集验证分子发现和生存差异.
主要方法:
- 188名CCA患者的体质和生殖系突变概况.
- 将患者分为年轻 (≤45岁) 和老 (>45岁) 队列.
- 用外部验证对遗传变异,可操作突变和整体存活率 (OS) 的比较分析 (N=392).
主要成果:
- 较老的CCA患者有更频繁的KRAS变异 (P=.04) 和专门的TERT促进器突变.
- 在老年患者中,FGFR2融合的发生率较低 (P=.05).
- 老年患者的KRAS (HR:1.96) 和TERT (HR:2.03) 变化与较低的OS相关,而最初在年龄组之间没有显著的OS差异. 在38.3%的患者中发现了可操作的突变,在年轻女性中,FGFR2融合和BRAF突变更频繁.
结论:
- 在45岁以上的CCA患者中,KRAS/TERT变化的丰富与较低的整体存活率有关.
- 大约三分之一的CCA患者具有可操作的突变,表明他们有资格接受向治疗或免疫治疗.
- 患有CCA的年轻女性可能会受益于特定的向治疗,因为可操作的FGFR2融合和BRAF突变的频率更高.
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