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根据BMI关联划分膝关节骨关节炎遗传变异,以改善多基因风险预测

Bahar Sedaghati-Khayat¹, Katerina Trajanoska¹, Cindy G Boer¹

¹Department of Internal Medicine, Erasmus University Medical Center Rotterdam, the Netherlands.

Osteoarthritis and cartilage

|October 2, 2025

概括

对膝关节骨关节炎 (KOA) 的多基因风险评分 (PRS) 的划分有助于区分由身体质量指数 (BMI) 介导的遗传影响与独立的影响. 这种方法改善了KOA风险预测,并为个性化预防策略提供了信息.

科学领域:

遗传学遗传学是一个
骨关节炎研究骨关节炎研究
生物统计学生物统计学

背景情况:

多基因风险评分 (PRS) 提供了增强膝关节骨关节炎 (KOA) 风险预测的潜力.
许多KOA相关的遗传变异也与体重指数 (BMI) 相关,这是一个重要的KOA风险因素,使预测模型复杂化.

研究的目的:

为了区分BMI介导的与BMI独立的基因对KOA的贡献.
将KOA多基因风险评分 (PRS) 分区,以提高可解释性.

主要方法:

利用了来自345,080名白人欧洲参与者的英国生物库数据.
通过146个全基因组显著变异改进了KOA-PRS.
将KOA变异分为与BMI相关的 (KOA-BMI PRS) 和BMI独立的 (KOA-nonBMI PRS) 组,基于与BMI变异的链接不平衡.

主要成果:

在146种KOA变异中,有73种与BMI相关.
KOA-BMI PRS与事件KOA强烈相关,通过BMI调整减弱.
科亚非BMI PRS仍然对BMI调整保持强,在KOA病例中显示与BMI的负相关性.
在高BMI层中,KOA-非BMI PRS效应减弱,而KOA-BMI PRS效应稳定.

结论:

大约50%的KOA相关变异与BMI位置重叠.
分区KOA-PRS通过将BMI驱动的独立遗传效应分开来增强理解.
这种精细的方法改善了KOA的预测,并支持定制的预防策略;建议在多种人群中进一步验证.

关键词:

身体质量指数 (BMI) 是指身体质量指数.基因风险划分基因风险划分膝关节关节炎 (KOA) 是一种疾病.多基因风险评分 (PRS)风险预测风险预测

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