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 language | English |
|---|---|
| Pages (from-to) | 253-6 |
| Number of pages | 4 |
| Journal | Annals of the Rheumatic Diseases |
| Volume | 68 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2009 |
| Externally published | Yes |
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