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无症状抗核抗体生产的遗传分析

Mehmet Hocaoǧlu¹, Desiré Casares-Marfil¹, Amr H Sawalha¹

¹University of Pittsburgh, Pittsburgh, Pennsylvania.

Arthritis & rheumatology (Hoboken, N.J.)

|October 18, 2024

概括

遗传因素没有显著影响无症状抗核抗体 (ANA) 阳性. 环境因素似乎是一般人群中ANA生产的主要驱动因素.

科学领域:

免疫学免疫学免疫学
遗传学是一个遗传学.
人口健康人口健康

背景情况:

抗核抗体 (ANA) 在多达14%的人群中存在,通常没有症状.
无症状ANA阳性的遗传基础在很大程度上仍未被探索.

研究的目的:

进行全基因组关联研究 (GWAS),调查不同人群中无症状ANA阳性的遗传基础.
估计无症状ANA阳性的遗传性,并评估其与狼遗传风险的关系.

主要方法:

对GWAS数据进行了多人群元分析,对来自All of Us研究计划的无症状ANA阳性和ANA阴性个体进行了分析.
包括具有免疫光性ANA测试和没有自身免疫性疾病诊断的个体.
分析包括归算,对数百万个单核酸多态 (SNP) 的检查,遗传性估计和狼遗传风险评分的构建.

主要成果:

该研究包括1,955名ANA阳性和3,634名ANA阴性无症状个体.
在8个位点发现了暗示性SNP关联,在HLA-DQB1附近的一个变体显示了最强的信号 (P = 1.4 × 10-6).
遗传率估计为24.9%,在ANA阳性个体中没有观察到狼的遗传风险增加.

结论:

无症状的ANA阳性与遗传风险没有显著联系.
环境因素是ANA生产的主要决定因素.

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相关概念视频

Genome-wide Association Studies-GWAS

Genome-wide Association Studies-GWAS

Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...