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  • Title: Association of polymorphisms in interferon regulatory factor 5 gene with rheumatoid arthritis: a metaanalysis.
    Author: Han SW, Lee WK, Kwon KT, Lee BK, Nam EJ, Kim GW.
    Journal: J Rheumatol; 2009 Apr; 36(4):693-7. PubMed ID: 19228650.
    Abstract:
    OBJECTIVE: We investigated potential associations between rheumatoid arthritis (RA) and interferon regulatory factor 5 (IRF5) polymorphisms in a metaanalysis. METHODS: This metaanalysis included 5 case-control studies, which provided a total of 6582 RA cases and 5375 controls. Odds ratios (OR) were employed to evaluate the risk of RA according to the 4 single-nucleotide polymorphisms (SNP) in IRF5 (rs729302, rs2004640, rs752637, and rs2280714) and data were analyzed in respect to association between alleles. RESULTS: Among 4 candidate SNP, rs729302, rs2004640, and rs2280714 were statistically significant; both allele C of rs729302 and allele G of rs2004640 within the promoter region of IRF5 were associated with a protective effect [random-effects (RE) OR 0.889, 95% confidence interval (CI) 0.803-0.977, p=0.015 for rs729302; and RE OR 0.905, 95% CI 0.848-0.965, p=0.002 for rs2004640]. Similar results were also obtained in T allele of rs2280714 in the 3'-untranslated region (RE OR 0.927, 95% CI 0.866-0.992, p=0.029). There was no evidence of publication bias from funnel-plot asymmetry and Egger's regression test. CONCLUSION: Our metaanalysis supported the evidence of the significant role of IRF5 polymorphisms in RA.
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