乳腺癌风险因素对激素受体乳腺癌亚型的因果关系:两样本的孟德尔随机化研究
Renée M G Verdiesen1, Mehrnoosh Shokouhi1, Stephen Burgess2
1The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, Netherlands.
概括
确定的乳腺癌风险因素,如身高和体重指数 (BMI),显示了各个亚型的因果关系. 然而,其他因素对不同类型的乳腺癌的影响有所不同,突出了亚型特定的预防策略.
科学领域:
- 遗传学和流行病学
- 在瘤学瘤学.
- 公共卫生 公共卫生
背景情况:
- 乳腺癌包括各种各样的亚型,具有不同的生物学行为和临床结果.
- 确定的风险因素对这些亚型的差异性影响仍然不完全理解.
- 澄清这些关联对于有针对性的预防和风险分层至关重要.
研究的目的:
- 在五种主要激素受体亚型中调查和比较关键乳腺癌风险因素的因果关系.
- 确定身高,BMI和生活方式选择等风险因素是否对不同乳腺癌亚型具有均或可变的影响.
主要方法:
- 利用两样本的门德尔随机化方法与来自大型全基因组关联研究的遗传仪器变量.
- 分析了来自乳腺癌协会联盟的公开可用的数据,包括光A类,光B/HER2阴性,光B类,HER2丰富和三阴性亚型.
- 采用多种门德尔随机化方法来评估风险因素亚型关联的因果关系证据.
主要成果:
- 增加身高和降低体重指数 (BMI) 被确定为所有五种乳腺癌亚型的可能因果风险因素.
- 对于更年期的年龄和乳腺密度的因果效应的强度在各个亚型之间有显著的差异,三阴性瘤的结果为零.
- 定期吸烟没有证据表明对任何研究的乳腺癌亚型有因果关系.
结论:
- 已确定的乳腺癌风险因素在激素受体亚型中表现出差异性的因果作用.
- 这些发现强调了在乳腺癌研究和预防中考虑亚型特定病因的重要性.
- 结果可以为初级预防策略提供信息,并改善不同乳腺癌患者群体的风险分层.
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