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Sökning: (WFRF:(Ortego Centeno N)) pers:(Airo P) > (2011)

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  • Broen, JCA, et al. (författare)
  • The functional polymorphism 844 A>G in FcαRI (CD89) does not contribute to systemic sclerosis or rheumatoid arthritis susceptibility
  • 2011
  • Ingår i: The Journal of rheumatology. - : The Journal of Rheumatology. - 0315-162X .- 1499-2752. ; 38:3, s. 446-449
  • Tidskriftsartikel (refereegranskat)abstract
    • To investigate the role of the FcαRI 844 A>G functional polymorphism in the genetic predisposition to rheumatoid arthritis (RA) and systemic sclerosis (SSc) susceptibility.Methods.The study population was composed of 1401 patients with SSc, 642 patients with RA, and 1317 healthy controls. The FcαRI (CD89) single-nucleotide polymorphism rs16986050 was genotyped by pyrosequencing.Results.We observed no significant deviation of the genotype and allele frequencies in RA and SSc compared to controls. A metaanalysis and a recessive and dominant model yielded similar negative results.Conclusion.Our data show that the FcαRI 844 A>G polymorphism is not associated with SSc or RA susceptibility.
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  • Diaz-Gallo, L. M., et al. (författare)
  • Analysis of the influence of PTPN22 gene polymorphisms in systemic sclerosis
  • 2011
  • Ingår i: Annals of the Rheumatic Diseases. - : BMJ. - 1468-2060 .- 0003-4967. ; 70:3, s. 454-462
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective Two functional single nucleotide polymorphisms (SNP) in the PTPN22 gene (rs24746601 and rs33996649) have been associated with autoimmunity. The aim of this study was to investigate the role of the R263Q SNP for the first time and to re-evaluate the role of the R620W SNP in the genetic predisposition to systemic sclerosis (SSc) susceptibility and clinical phenotypes. Methods 3422 SSc patients (2020 with limited cutaneous SSc and 1208 with diffuse cutaneous SSc) and 3638 healthy controls of Caucasian ancestry from an initial case--control set of Spain and seven additional independent replication cohorts were included in our study. Both rs33996649 and rs2476601 PTPN22 polymorphisms were genotyped by TaqMan allelic discrimination assay. A meta-analysis was performed to test the overall effect of these PTPN22 polymorphisms in SSc. Results The meta-analysis revealed evidence of association of the rs2476601 T allele with SSc susceptibility (p(FDRcorrected) = 0.03 pooled, OR 1.15, 95% CI 1.03 to 1.28). In addition, the rs2476601 T allele was significantly associated with anticentromere-positive status (p(FDRcorrected) = 0.02 pooled, OR 1.22, 95% CI 1.05 to 1.42). Although the rs33996649 A allele was significantly associated with SSc in the Spanish population (p(FDRcorrected) = 0.04, OR 0.58, 95% CI 0.36 to 0.92), this association was not confirmed in the meta-analysis (p = 0.36 pooled, OR 0.89, 95% CI 0.72 to 1.1). Conclusion The study suggests that the PTPN22 R620W polymorphism influences SSc genetic susceptibility but the novel R263Q genetic variant does not. These data strengthen evidence that the R620W mutation is a common risk factor in autoimmune diseases.
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