期刊
CURRENT OPINION IN RHEUMATOLOGY
卷 21, 期 3, 页码 262-271出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/BOR.0b013e32832a2e2d
关键词
CD40; genetic; genome-wide association; nuclear factor kappa-light-chain-enhancer of activated B cells; rheumatoid arthritis
类别
Purpose of review Recent human genetic discoveries have increased our understanding of rheumatoid arthritis (RA) susceptibility. These discoveries are reviewed and placed in the context of potential important clinical applications. Recent findings Genome-wide association studies and related methodologies have expanded the number of validated RA risk loci beyond HLA-DRB1 'shared epitope' alleles to include additional major histocompatibility complex risk alleles and more than 10 regions outside the major histocompatibility complex locus. The newly discovered risk alleles are common in the general population, and most have a modest effect on risk of RA (odds ratio similar to 1.15 per copy of each risk allele). Although the actual causal mutation and causal gene for most loci remain to be determined, these studies are beginning to reveal general themes: many risk loci are associated with other autoimmune diseases, many genes fall within discrete biological pathways (e.g., the NF-kappa B signaling pathway), and human genetics can subset disease into clinically meaningful categories (e.g., presence or absence of autoantibodies). Summary Approximately one-third of the genetic basis of RA can be explained by known risk loci. Future studies need to pinpoint the actual causal mutations, expand the number of risk loci, and translate these discoveries to improve care of patients with RA.
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