全基因组关联研究确定了三种PNPLA3/SAMM50SNP与非病毒性肝病中HCC发展相关
Xia-Rong Liu1, Tsai-Hsuan Yang1, Tung-Hung Su2,3
1Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
JHEP reports : innovation in hepatology
|February 2, 2026
概括
在没有病毒性肝炎的个体中,PNPLA3/SAMM50的遗传变异与肝细胞癌 (HCC) 风险有关. 这些发现为HCC风险分层和精确预防策略提供了潜在的生物标志物.
科学领域:
- 遗传学和基因组学 在
- 肝病学 肝病学是一种肝病学.
- 癌症流行病学 癌症流行病学
背景情况:
- 有限的全基因组关联研究 (GWAS) 存在于肝细胞癌 (HCC) 风险的个体负的乙型肝炎和C型肝炎病毒标志物.
- 遗传变异对非病毒性肝炎人群中HCC风险的长期影响仍然在很大程度上未被描述.
研究的目的:
- 确定和验证与长期HCC风险相关的遗传变异,在HBsAg和抗HCV的成年人中为血清阴性.
- 评估已识别的变种作为HCC风险分层的生物标志物的潜力.
主要方法:
- 一个涉及发现,社区和医院的多阶段GWAS验证集分析了308,693个单核酸多态 (SNP).
- 一项前性队列研究从2012年到2021年跟踪了67,909名参与者,以评估与已识别的变种相关的长期HCC风险.
- 统计分析包括基于基因型的HCC风险的链接不平衡评估和危险比计算.
主要成果:
- 在PNPLA3/SAMM50位点中,有10个SNP与HCC风险显著相关 (p <1.62 × 10^-7),其中3个SNP (rs738409,rs2281135,rs2235776) 具有强烈的复制性.
- 这些相关的SNP显示出独立于乳脂病的显著HCC风险.
- 具有风险基因型的同卵性个体表现出高高风险,调整后的危险比率从2.64到3.37不等;风险等位基因携带者也表现出增加的风险 (调整后的HRs为1.61-1.88).
结论:
- 在没有病毒性肝炎的个体中,PNPLA3/SAMM50变异与长期的HCC风险有显著的关联.
- 这些变体可以作为有价值的生物标志物,用于识别高风险的HCC个体,促进精确的预防.
- 进一步研究这些遗传关联的潜在机制是有必要的.
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