罕见的变异赋予了对胃肠道癌症风险的共享敏感性
Ji Zheng1, Xin Wang1,2, Jingrao Li1
1Department of Epidemiology, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China.
Frontiers in oncology
|July 24, 2023
概括
这项研究确定了13个新的遗传位置和关键基因 (EXOC6,LRP5L,MIR1263/LINC01324) 导致食道,胃和结直肠癌的共享易感性. 这些发现为胃肠癌机制提供了新的见解.
科学领域:
- 遗传学 是一个遗传学.
- 在瘤学瘤学.
- 生物信息学是一种生物信息学.
背景情况:
- 胃肠道 (GI) 癌症是由遗传改变驱动的复杂疾病.
- 共同的遗传特征表明,在以表皮为基础的胃肠道恶性瘤中具有共同的易感性.
- 罕见的遗传变异可能在这种共享易感性中发挥作用.
研究的目的:
- 调查食道,胃和结直肠癌的共同遗传易感性.
- 识别新型遗传变异和导致常见风险因素的基因.
- 探索涉及这些共同易感性的潜在生物学途径.
主要方法:
- 在3194例病例和1455例对照中对38171种罕见遗传变异进行了交叉癌症分析.
- 全基因组关联研究 (GWAS) 使用多变量逻辑回归和ASSET用于SNP级别分析.
- 使用FDR校正的SKAT-O进行基因水平分析,随后进行途径分析 (GO,KEGG,Reactome).
主要成果:
- 确定了13个新的敏感度位点,达到全基因组显著性 (P_ASSET < 5x10^-8).
- 发现了重要的共享基因,包括EXOC6,LRP5L和MIR1263/LINC01324 (P_adj <0.05,P_FDR <0.05).
- 路径分析显示,三种胃肠道癌都存在突触传输和神经元发育路径的丰富.
结论:
- 罕见的变异和已识别的基因有助于在胃肠道癌症中共享易感性.
- 新型变异和基因为致癌机制提供了洞察力.
- 这些发现有助于解释胃肠道癌症缺失的遗传性.
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