多发性硬化症易感性的遗传决定因素在来自不同祖先背景的人群中
Benjamin Meir Jacobs1,2, Luisa Schalk1, Emily Tregaskis-Daniels1
1Centre for Preventive Neurology, Wolfson Institute of Population Health, Queen Mary University of London, United Kingdom.
Neurology
|March 6, 2026
概括
多发性硬化症 (MS) 易感性的遗传结构在欧洲,南亚和非洲的祖先中是相似的,表明共同的疾病机制. 在多样化的群体中进行进一步的研究对于全面了解多发性硬化遗传学至关重要.
科学领域:
- 遗传学 是一个遗传学.
- 免疫学 免疫学 免疫学
- 人口健康 人口健康
背景情况:
- 多发性硬化症 (MS) 易感性研究主要集中在欧洲祖先群体上.
- 了解MS在不同祖先中的遗传基础对于公平的医疗保健和研究至关重要.
研究的目的:
- 研究南亚 (SAS) 和非洲 (AFR) 祖先群体中MS易感性的遗传结构.
- 为了比较欧洲 (EUR),SAS和AFR祖先的MS遗传风险因素.
主要方法:
- 在英国招募并对多样化的多发性硬化症 (pwMS) 患者进行基因定型.
- 通过单核酸变异和人类白细胞抗原 (HLA) 的等位基因进行了祖先内遗传关联研究.
- 结合队列数据与英国生物库 (UKB) 病例和对照进行分析.
主要成果:
- 主要基因相容复合体 (MHC) 变异与所有祖先的MS易感性相关.
- 在SAS和AFR病例中,EUR祖先敏感性等位基因过度代表,在SAS病例中一致性更强.
- 与欧元队伍相比,来自欧元的遗传风险得分解释了SAS和AFR队伍中较少的责任.
- 这种HLA-DRB1*15:01等位基因表现出类似的效应,但由于等位基因的频率,SAS和AFR的人口水平风险较低.
- 确定了SAS丰富的HLA-A*33:03等位基因的潜在保护作用.
结论:
- 多发性硬化症易感性的遗传结构在祖先群体之间表现出强烈的一致性,这表明共享的潜在疾病机制.
- 扩大对不同人群的研究是必不可少的,以充分阐明遗传变异对所有背景的MS易感性的贡献.
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