Article
IgA vasculitis sibling clustering: From HLA-DRB1 genetic burden to nephritis risk stratification.
Autoimmunity reviews - 1 Aug 2026
Ren Lingjia, Xu Yan, Zhang Xia, Xu Jixiang, Jiang Miao, Ren Xianqing, Ding Ying
Abstract excerpt
IgA vasculitis (IgAV) is the most common systemic small-vessel vasculitis in childhood, with an annual incidence of 3 to 26.7 per 100,000 children. Although it is predominantly sporadic, its 1.9% familial clustering rate and significant tendency for sibling comorbidity suggest a non-random pathogenesis. Multicohort GWAS data confirm that HLA-DRB1*01 and HLA-DRB1*11 are common genetic risk loci across ethnic...
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