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    Ann Rheum Dis. 2010 Aug;69(8):1471-4. Epub 2009 Sep 3.

    A CLEC16A variant confers risk for juvenile idiopathic arthritis and anti-cyclic citrullinated peptide antibody negative rheumatoid arthritis.

    Source

    Department of Medical Genetics, Oslo University Hospital, Ullevål, Kirkeveien 166, N-0407 Oslo, Norway. beate.skinningsrud@medisin.uio.no

    Abstract

    OBJECTIVE:

    Variants in CLEC16A have conferred susceptibility to autoimmune diseases in genome-wide association studies. The present work aimed to investigate the locus' involvements in juvenile idiopathic arthritis (JIA) and further explore the association with rheumatoid arthritis (RA), type 1 diabetes (T1D) and Addison's disease (AD) in the Norwegian population.

    METHODS:

    Three single nucleotide polymorphisms (SNPs) were genotyped in patients with RA (n=809), JIA (n=509), T1D (n=1211) and AD (n=414) and in healthy controls (n=2149).

    RESULTS:

    All diseases were associated with CLEC16A, but with different SNPs. The intron 22 SNP, rs6498169, was associated with RA (p=0.006) and JIA (p=0.016) and the intron 19 SNPs, rs12708716/rs12917716, with T1D (p=1x10-5) and AD (p=2x10-4). The RA association was confined to the anti-cyclic citrullinated peptide antibody (anti-CCP) negative subgroup (p=2x10-4).

    CONCLUSION:

    This is the first report of a CLEC16A association with JIA and a split of the RA association according to anti-CCP status. Different causative variants underlie the rheumatic versus the organ specific diseases.

    PMID:
    19734133
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2938883
    Free PMC Article

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