IL1R1 gene variants associate with disease susceptibility to IgG4-related periaortitis/periarteritis in IgG4-related disease

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IgG4-related disease (IgG4-RD) is an immune-mediated disorder characterized by high serum IgG4 concentration and IgG4-bearing plasma cell infiltration in affected organs. IgG4-related periaortitis/periarteritis is a recently identified disease entity in IgG4-RD that affects the cardiovascular system. Since the genetic factors related to disease onset are unclear, we examined the genetic associations with IgG4-related periaortitis/periarteritis susceptibility.A small scale of genome-wide association analysis identified that interleukin 1 receptor type 1 (IL1R1) gene variants were correlated with the development of IgG4-related periaortitis/periarteritis in 75 patients with IgG4-RD. Accordingly, 8 single nucleotide polymorphisms (SNPs) in the IL1R1 gene were selected and genotyped in 124 patients with IgG4-RD (43 with periaortitis/periarteritis and 81 without periaortitis/periarteritis) and 344 healthy subjects.The minor allele frequencies of 6 SNPs (rs2287049, rs3917273, rs2160227, rs951192, rs3917318, rs7582198) were significantly increased in IgG4-related periaortitis/periarteritis patients compared with those without periaortitis/periarteritis (corrected P  0.05). In addition, the frequency of the AGAAA haplotype, comprised of 5 SNPs (rs3917273, rs2160227, rs951192, rs3917318, rs7582198), was significantly higher in patients with periaortitis/periarteritis (OR = 2.41, 95% CI:1.42-4.10).Our findings indicated that IL1R1 genetic polymorphisms contributed to IgG4-related periaortitis/periarteritis and the possibility of certain genetic factors influencing the risk of specific IgG4-RD manifestations.

Journal

  • Gene

    Gene 820 146212-, 2022-04

    Elsevier BV

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