两样本孟德尔随机化研究BMI与下肢动脉血栓发生之间的因果关系

张 守庆, 朱 琳, 许京 伟*
日照市中医医院

摘要


目的:本研究的主要目的是使用孟德尔随机化方法探究BMI与下肢动脉栓塞和血栓形成之间的因果关系。方法:本次研究使用大规模基因组关联研究(IEU open GWAS)数据来选择BMI相关的遗传数据作为暴露(总样本量339224例,共计2555511个SNP),使用芬兰数据库数据作为下肢动脉血栓的结局数据(总样本量350524例,共计20169687个SNP),利用孟德尔随机化的方法来评估BMI对下肢动脉栓塞和血栓形成的潜在因果影响。结果:共获得的rs1000940、rs10132280、rs1016287、rs10182181等73个工具变量SNP,MR分析结果显示BMI的升高与下肢动脉栓塞和血栓形成之间存在正向的因果关系OR=1.62792474(OR_lci95,1.012986251;OR_uci95,2.616164785),每单位BMI升高会增加会导致下肢动脉栓塞和血栓形成风险增加1.62倍。结论:高BMI被确定为下肢动脉栓塞和血栓形成的潜在因果风险因素。

关键词


身体质量指数;下肢动脉血栓;全基因组关联研究;孟德尔随机化

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参考


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