在多种不同人群中对肝细胞癌的关键致癌途径进行比较基因组分析
Cecilia Monge1, Brigette Waldrup2, Francisco G Carranza2
1Center for Cancer Research, National Cancer Institute, Bethesda MD.
medRxiv : the preprint server for health sciences
|October 1, 2025
概括
在西班牙裔/拉丁裔和非西班牙裔白人患者之间发现了肝细胞癌 (HCC) 的分子差异,在H/L个体中更常见的是特定途径突变. 这些发现强调了在HCC护理中需要特定种族的精准医学.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 生物信息学是一种生物信息学.
背景情况:
- 肝细胞癌 (HCC) 在发病率和结果方面存在显著的种族和民族差异.
- 与非西班牙裔白人 (NHW) 患者相比,西班牙裔/拉丁裔 (H/L) 患者通常在晚期被诊断出来.
- 导致这些HCC差异的分子机制尚不清楚.
研究的目的:
- 为了比较H/L和NHW患者之间的HCC中路径特异性突变.
- 评估瘤突变负担并确定与种族相关的致癌驱动因素.
- 为代表性不足的HCC人群提供准确医学策略的信息.
主要方法:
- 对公开可用的HCC数据集进行生物信息学分析 (547名患者:69名H/L,478名NHW).
- 在关键的致癌途径 (RTK/RAS,TGF-Beta,WNT,PI3K,TP53) 中对突变频率的评估.
- 使用奇平方测试和通过卡普兰-梅尔的生存分析进行突变流行率的统计比较.
主要成果:
- 在H/L患者中,RTK/RAS途径中的FGFR4突变显著更为普遍 (4.3%对0.6%,p=0.02).
- 在H/L患者中观察到INPP4B变异 (PI3K通路) 和TGFBR2突变 (TGF-Beta通路) 的频率增加.
- 在H/L和NHW患者之间没有发现总生存时间的显著差异,这表明其他因素影响了生存差异.
结论:
- 在H/L和NHW种群之间的HCC中存在明显的分子差异.
- 特定途径的改变 (RTK/RAS,PI3K,TGF-Beta) 可能在H/L患者中在HCC中发挥独特的作用.
- 以种族为特征的分子分析对于在HCC中推进精准医学对代表性不足的群体至关重要.
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