alexa Immunoregulatory gene polymorphisms are associated with ANCA-related vasculitis.
Nephrology

Nephrology

Journal of Nephrology & Therapeutics

Author(s): Slot MC, Sokolowska MG, Savelkouls KG, Janssen RG, Damoiseaux JG,

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Abstract T cell activation is regulated by inhibitory molecules such as PD-1 and CTLA-4, whose expression may be affected by gene polymorphisms. Increased T cell activation is present in patients with ANCA-associated vasculitis (AAV). We investigated two single-nucleotide polymorphisms (SNPs) in PDCD1 and five polymorphisms in CTLA4 in 102 patients with AAV and 188 healthy controls (HC). The distributions of the PD-1.3 and PD-1.5 SNPs, and the distributions of the CTLA4 promoter polymorphisms -1722T/C, -1661A/G, -318 C/T, and the (AT)(n) microsatellite in the 3'-untranslated region of CTLA4, did not differ between patients and HC. However, the +49 G allele was significantly more often present in patients with AAV. Furthermore, the co-occurrence of the PD-1.5 T allele with CTLA4 +49 AA homozygosity (i.e., the absence of a G allele) was less often present in patients compared to HC. These genetic polymorphisms may lead to hyperreactivity of T cells and thus may contribute to the pathogenesis of AAV. This article was published in Clin Immunol and referenced in Journal of Nephrology & Therapeutics

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