对CHEK2相关癌症倾向的基因组检测
Sun Young Kim1,2, Jung Kim1, Mark Ramos1,3
1Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Rockville, Maryland.
JAMA network open
|December 15, 2025
概括
患有CHEK2致病变体的个人有几种癌症的风险增加,包括乳腺癌和前列腺癌. 这项研究量化了大型队列中的患病率和癌症风险,发现了较低的过度死亡率和癌症风险 (odds比率<2).
科学领域:
- 遗传学和基因组学 在
- 在瘤学瘤学.
- 流行病学 流行病学
背景情况:
- 已知CHEK2中的有害生殖系变异会增加乳腺癌和前列腺癌的风险.
- 关于CHEK2变异与其他癌症相关的证据有限或相互矛盾.
研究的目的:
- 量化CHEK2生殖系致病和可能致病变体的流行率.
- 通过基因组检测来评估与这些CHEK2变异相关的癌症风险和生存率.
主要方法:
- 一项用两个大型的外体序列化生物库进行的病例对照研究:英国生物库 (n=469,765) 和盖辛格MyCode (n=167,050).
- 使用美国医学遗传学和基因组学学院和分子病理学协会标准分类的变种.
- 用SAIGE-GENE+调整相关性并使用邦费罗尼校正进行的关联分析.
主要成果:
- 对所有癌症,乳腺癌,前列腺癌,脏癌,膀癌和淋巴细胞白血病在患有CHEK2致病变异的人群中观察到显著的风险过剩.
- 与对照组相比,癌症诊断的时间在病例中显著缩短.
- 在英国生物库病例中,总体存活率下降,特别是在75岁后;在MyCode中没有发现显著的生存差异.
结论:
- 生殖系CHEK2致病变体与多种癌症的风险增加有关,包括乳腺癌,前列腺癌,脏癌,膀癌和淋巴细胞白血病.
- 与这些变体相关的过度死亡率和癌症风险相对较低 (几率比率<2).
- 这些发现对通过基因组鉴定确定CHEK2变异的个体具有临床意义,与具有癌症家族史的人不同.
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