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  • Title: 1858 C/T polymorphism of the protein tyrosine phosphatase nonreceptor 22 gene and rheumatoid arthritis risk in europeans: a meta-analysis.
    Author: Nong LM, Ren KW, Xu NW, Zhou D.
    Journal: Arch Med Res; 2011 Nov; 42(8):698-702. PubMed ID: 22209972.
    Abstract:
    BACKGROUND AND AIMS: A single nucleotide polymorphism (SNP) of the protein tyrosine phosphatase nonreceptor gene (PTPN22) confers susceptibility to rheumatoid arthritis (RA) and certain other classical autoimmune diseases. The association between PTPN22 1858C/T polymorphism and the risk of RA is still controversial and ambiguous; therefore, we performed this meta-analysis to confirm some relationships. METHODS: We conducted a search in the PubMed database without a language limitation, covering all papers published until June 20, 2011. Overall, 19 case-control studies with 11,727 cases and 12,640 controls were retrieved based on the search criteria for RA susceptibility related to the 1858C/T polymorphism. Odds ratios (OR) and 95% confidence intervals (CI) were used to assess the strength of this association. Publication bias was assessed with Eggers test. RESULTS: We found that PTPN22 1858C/T polymorphism could increase RA risk in overall genetic models in Europeans (T-allele vs. C-allele, OR = 1.54, 95% CI = 1.47-1.62, P(heterogeneity) = 0.143; TT vs. CC, OR = 2.86, 95% CI = 2.29-3.57, P(heterogeneity) = 0.302; TC vs. CC, OR = 1.45, 95% CI = 1.38-1.53, P(heterogeneity) = 0.273; TT + TC vs. CC, OR = 1.49, 95% CI = 1.42-1.56, P(heterogeneity) = 0.208; TT vs. TC + CC, OR = 2.52, 95% CI = 1.95-3.25, P(heterogeneity) = 0.296). Furthermore, significant relationships were detected among PTPN22 1858C/T polymorphism and RF(+) or RF(-) RA risk. No obvious evidence of publication bias was detected in the overall analysis. CONCLUSIONS: Our study indicated that PTPN22 1858T allele was significantly associated with increased RA risk.
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