CT60 and +49 polymorphisms of CTLA 4 are associated with ANCA-positive small vessel vasculitis

L Kamesh, JM Heward, Julie Williams, Stephen Gough, KM Chavele, A Salama, C Pusey, Caroline Savage, Lorraine Harper

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

OBJECTIVE: To investigate whether single nucleotide polymorphisms (SNPs) within cytotoxic T-lymphocyte antigen-4 (CTLA-4) are associated with ANCA-associated small vessel vasculitis (SVV). METHODS: The CTLA-4 CT60 (exon 4), +49 (exon 1) and -318 (promoter region) genotypes were determined by PCR and restriction fragment length polymorphism (RFLP) in 222 white Caucasians of UK origin with SVV and 670 ethnically matched controls. RESULTS: The CTLA-4 exon 1 (+49) and 4 (CT60) polymorphisms are associated with SVV (+49: chi(2) = 10.965, P = 0.004; CT60: chi(2) = 12.017, P = 0.002). Both disease-susceptible and disease-protective haplotypes have been identified in this cohort, and their frequencies are similar in the subtypes of WG and microscopic polyangiitis. CONCLUSION: This study provides further evidence that CTLA-4, a susceptibility locus for a number of common autoimmune diseases, may also be involved in the development of ANCA-associated SVV.
Original languageEnglish
Pages (from-to)1502-5
Number of pages4
JournalRheumatology
Volume48
Issue number12
DOIs
Publication statusPublished - 1 Dec 2009

Keywords

  • Vasculitis
  • Polymorphisms
  • CTLA-4

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