The interleukin 23 receptor gene does not confer risk to systemic sclerosis and is not associated with systemic sclerosis disease phenotype

B Rueda, J Broen, O Torres, C Simeon, N Ortego-Centeno, M M V A P Schrijvenaars, M C Vonk, V Fonollosa, F H J van den Hoogen, M J H Coenen, J Sanchez-Román, M A Aguirre-Zamorano, R García-Portales, A Pros, M T Camps, M A Gonzalez-Gay, J Martin, T R D J Radstake

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

OBJECTIVES: Multiple studies indicate the role of the interleukin (IL)-17/IL-23 axis in autoimmune diseases, including systemic sclerosis (SSc). The aim of the current study was to investigate the possible implication of the IL23R gene in SSc susceptibility and/or clinical phenotype.

METHODS: An initial case-control study in 143 Dutch patients with SSc and geographically matched healthy individuals (n = 246) was carried out and followed by a replication study in a cohort of 365 Spanish patients with SSc and 515 healthy individuals. Seven single nucleotide polymorphisms (SNPs) spanning the IL23R gene were selected and genotyped using a Taqman assay.

RESULTS: Using a Dutch cohort of patients with SSc and controls we observed an association between two (rs11209032, rs1495965) of the seven tested SNPs and disease susceptibility (allelic p values: p = 0.02 and p = 0.01 respectively). However, a replication study in an independent Spanish cohort did not confirm these findings and reveal no association of any of the IL23R-tested SNP with disease susceptibility or clinical phenotype. Similarly, a meta-analysis considering both populations did not reveal any significant association. In addition, no association was observed between IL23R genetic variants and SSc clinical phenotypes.

CONCLUSIONS: Our results suggest that the IL23R gene is not associated with SSc susceptibility or clinical phenotype.

Original languageEnglish
Pages (from-to)253-6
Number of pages4
JournalAnnals of the Rheumatic Diseases
Volume68
Issue number2
DOIs
Publication statusPublished - Feb 2009
Externally publishedYes

Keywords

  • Adult
  • Aged
  • Case-Control Studies
  • Female
  • Gene Frequency
  • Genetic Predisposition to Disease
  • Genotype
  • Humans
  • Male
  • Middle Aged
  • Phenotype
  • Polymorphism, Single Nucleotide
  • Receptors, Interleukin
  • Scleroderma, Systemic
  • Journal Article
  • Meta-Analysis
  • Multicenter Study
  • Research Support, Non-U.S. Gov't

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