跨祖先的互乐金-6受体变体和表型之间的异质关联以及对治疗的影响
Xuan Wang1, Molei Liu2, Isabelle-Emmanuella Nogues3
1Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA.
Scientific reports
|April 5, 2024
概括
一种新方法有效地测试了现象广泛关联研究 (PheWAS) 中的子组差异. 这种方法揭示了跨祖先的IL6R变异-表型关联差异,包括2型糖尿病风险.
科学领域:
- 药物基因组学 药物基因组学
- 遗传流行病学遗传流行病学
- 计算生物学 计算生物学
背景情况:
- 现象广泛关联研究 (PheWAS) 对于识别潜在的药物标和治疗效果非常有价值,例如使用IL6R变体作为IL6R抗剂的代理.
- 临床试验往往缺乏统计能力,以检测不同患者亚组的不同治疗效果.
- 现有的方法对于在PheWAS中的大量比较中有效测试子组异质性是有限的.
研究的目的:
- 开发一种强大而有效的方法,用于在PheWAS中测试异构的基因型-表型关联.
- 将这种新的方法应用于非洲 (AFR) 和欧洲 (EUR) 祖先的个人中的 IL6R PheWAS,以确定差异效应.
主要方法:
- 开发了一种新的统计方法,以最大限度地提高检测基因型-表型协会异质性跨子组的功率.
- 将该方法应用于PheWAS数据集,检查AFR和EUR种群中的IL6R变异.
- 分析了成千上万的基因型-表型比较,以确定显著差异.
主要成果:
- 确定了29个特征,显示出AFR和EUR祖先之间的差异IL6R变异-表型关联.
- 与欧盟 (OR 1.0) 相比,在AFR (OR 0.96) 中观察到2型糖尿病 (T2D) 的风险较低 (p-异质性 = 8.5 × 10−3).
- 在一个祖先群体中发现白细胞数量显著增加 (p-异质性=8.5 × 10−131).
结论:
- 开发的方法有效地识别了不同祖先的基因型-表型关联中的显著异质性.
- 研究结果表明,与EUR祖先相比,在AFR祖先的个体中,IL6R阻断对T2D的潜在益处可能更大.
- 该方法广泛适用于其他大规模的基因型-表型查研究,对不同人群进行查,为精准医学倡议提供信息.
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