Association analysis of the interleukin 17A gene in Caucasian rheumatoid arthritis patients from Norway and New Zealand
Open Access
- 30 January 2009
- journal article
- research article
- Published by Oxford University Press (OUP) in Rheumatology
- Vol. 48 (4), 367-370
- https://doi.org/10.1093/rheumatology/ken512
Abstract
Objective. Elevated levels of IL-17A have been detected in the inflamed synovium of RA patients, and murine arthritis models deficient in IL17A have shown reduced inflammation. Our aim was to investigate IL17A as a candidate gene for RA, and to assess correlations between risk variants and disease phenotypes. Methods. Five single nucleotide polymorphisms (SNPs) were selected to tag the genetic variability of the IL17A region and were genotyped by TaqMan technology on 950 RA cases and 933 random controls from Norway. Associations to progression of radiographic damage and presence of autoantibodies were examined in a 10-yr follow-up cohort of early RA. In addition, 580 RA patients and 504 controls from New Zealand were used as a replication data set. Results. A weak association between RA and the promoter SNP rs2275913 [odds ratio (OR) = 1.17; 95% CI 1.02, 1.34; P = 0.02] was found in the Norwegian population. The association was also evident at the genotype level where it indicated a recessive model. The allelic association was not replicated in the RA cohort from New Zealand (OR = 0.96; 95% CI 0.81, 1.16; P = 0.69). However, combined analysis suggested a weak recessive association (OR = 1.19; 95% CI 1.02, 1.37; P = 0.02). No significant associations were observed with radiographic progression, anti-cyclic citrullinated peptide or IgM-RF. Conclusions. Modest evidence of an association with IL17A in Norwegian RA patients was observed. Although, our findings were not replicated in an independent RA material from New Zealand, a significant common risk estimate indicated that IL17A warrants further investigation in RA.This publication has 17 references indexed in Scilit:
- Likelihood-Based Association Analysis for Nuclear Families and Unrelated Subjects with Missing Genotype DataHuman Heredity, 2008
- Regulation of IL-17 production in human lymphocytesCytokine, 2008
- Associations between the PTPN22 1858C->T polymorphism and radiographic joint destruction in patients with rheumatoid arthritis: results from a 10-year longitudinal studyAnnals Of The Rheumatic Diseases, 2007
- Associations between HLA-DRB1, RANK, RANKL, OPG, and IL-17 genotypes and disease severity phenotypes in Japanese patients with early rheumatoid arthritisClinical Rheumatology, 2007
- Th17 functions as an osteoclastogenic helper T cell subset that links T cell activation and bone destructionThe Journal of Experimental Medicine, 2006
- Crucial Role for Nuclear Factor of Activated T Cells in T Cell Receptor-mediated Regulation of Human Interleukin-17Online Journal of Public Health Informatics, 2004
- A Missense Single-Nucleotide Polymorphism in a Gene Encoding a Protein Tyrosine Phosphatase (PTPN22) Is Associated with Rheumatoid ArthritisAmerican Journal of Human Genetics, 2004
- Treatment with a neutralizing anti‐murine interleukin‐17 antibody after the onset of collagen‐induced arthritis reduces joint inflammation, cartilage destruction, and bone erosionArthritis & Rheumatism, 2004
- IFN deficient C57BL/6 (H-2b) mice develop collagen induced arthritis with predominant usage of T cell receptor V 6 and V 8 in arthritic jointsAnnals Of The Rheumatic Diseases, 2003
- The american rheumatism association 1987 revised criteria for the classification of rheumatoid arthritisArthritis & Rheumatism, 1988