Genome-wide association study of dermatomyositis reveals genetic overlap with other autoimmune disorders

  • Frederick W. Miller
  • , Robert G. Cooper
  • , Jiří Vencovský
  • , Lisa G. Rider
  • , Katalin Danko
  • , Lucy R. Wedderburn
  • , Ingrid E. Lundberg
  • , Lauren M. Pachman
  • , Ann M. Reed
  • , Steven R. Ytterberg
  • , Leonid Padyukov
  • , Albert Selva-O'Callaghan
  • , Timothy R D J Radstake
  • , David A. Isenberg
  • , Hector Chinoy
  • , William E R Ollier
  • , Terrance P. O'Hanlon
  • , Bo Peng
  • , Annette Lee
  • , Janine A. Lamb
  • Wei Chen, Christopher I. Amos, Peter K. Gregersen, Christopher Denton, David Hilton-Jones, Patrick Kiely, Paul H. Plotz, Mark Gourley, Paul Scheet, Hemlata Varsani

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Objective: To identify new genetic associations with juvenile and adult dermatomyositis (DM). Methods: We performed a genome-wide association study (GWAS) of adult and juvenile DM patients of European ancestry (n = 1,178) and controls (n = 4,724). To assess genetic overlap with other autoimmune disorders, we examined whether 141 single-nucleotide polymorphisms (SNPs) outside the major histocompatibility complex (MHC) locus, and previously associated with autoimmune diseases, predispose to DM. Results: Compared to controls, patients with DM had a strong signal in the MHC region consisting of GWAS-level significance (P <5 × 10-8) at 80 genotyped SNPs. An analysis of 141 non-MHC SNPs previously associated with autoimmune diseases showed that 3 SNPs linked with 3 genes were associated with DM, with a false discovery rate (FDR) of
    Original languageEnglish
    Pages (from-to)3239-3247
    Number of pages8
    JournalArthritis Care & Research
    Volume65
    Issue number12
    DOIs
    Publication statusPublished - Dec 2013

    Keywords

    • adult
    • dermatomyositis
    • juvenile
    • shared autoimmunity genes

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