非洲人体质量指数的多基因预测的可变性
Tinashe Chikowore1,2,3,4, Kristi Läll5, Lisa K Micklesfield6
1SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Pediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. tinashe.chikowore@channing.harvard.edu.
Genome medicine
|May 30, 2024
概括
身体质量指数 (BMI) 的多基因风险评分 (PRS) 在非洲大陆的非洲人中显示出不良预测. 多祖先PRS可以改善预测,强调基因与环境相互作用的作用以及对多样化遗传数据的需求.
科学领域:
- 遗传学 是一个遗传学.
- 人口健康 人口健康
- 生物信息学是一种生物信息学.
背景情况:
- 多基因风险评分 (PRS) 研究由于遗传和环境多样性,在非洲大陆的非洲人中是有限的.
- 在非洲,PRS对体重指数 (BMI) 的通用性是一个重大挑战.
- 了解影响非洲PRS变异性的因素至关重要.
研究的目的:
- 开发和评估非洲大陆人BMI的多祖先PRS.
- 在非洲和欧洲队列中,比较多祖先PRS与欧洲特定PRS的性能.
- 研究影响非洲人口PRS表现的因素.
主要方法:
- 利用了第一个多祖先全基因组关联研究 (GWAS) 的BMI的元分析,包括非洲大陆的非洲人.
- 衍生并比较多祖先和欧洲祖先特定的PRS.
- 基于精细映射分辨率,等位基因频率,链接不平衡以及基因与环境相互作用的评估PRS性能.
主要成果:
- 与欧洲人相比,非洲大陆人的BMI多基因预测较差.
- 一个多祖先的PRS在非洲队伍中表现出比欧洲特定的PRS更强大的预测能力.
- 观察到非洲PRS预测的区域差异,受环境因素 (如体力活动和社会经济地位) 的相互作用的影响.
结论:
- 基因与环境的相互作用显著影响了非洲人群中PRS预测变异性.
- 在非洲改善PRS预测需要考虑这些相互作用的方法.
- 在GWAS中增加非洲祖先的代表性对于提高PRS准确性至关重要.
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