Cyclooxygenase-2 genotype and rheumatoid arthritis

Kyu Hoon Lee, Hee Sang Kim, Ahmed El-Sohemy, Marilyn C. Cornelis, Wan Sik Uhm, Sang Cheol Bae*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Objective. To determine the association between cyclooxygenase-2 (COX-2) genotypes and risk and severity of rheumatoid arthritis (RA) in a Korean population. Methods. A total of 258 Korean patients with RA and 400 control subjects were recruited from Hanyang University Hospital. Subjects were genotyped for the -765G/C polymorphism of the COX-2 gene by RFLP-PCR analysis. Odds ratios (OR) and 95% confidence intervals (CI) were calculated to estimate risk. Severity of RA was assessed by anatomical stage according to Steinbrocker, et al. Results. No association was observed between COX-2 genotype and risk or severity of RA. However, among those without the shared epitope (SE), carriers of the low activity C allele had a lower risk of RA and less severe form of RA than subjects with the G/G genotype. The OR (95% CI) was 0.36 (0.14-0.95) for risk of RA and 0.04 (0.01-0.41) for severity. Conclusion. These results suggest that COX-2 genotyping might be useful in predicting the risk and severity of RA in individuals without the SE.

Original languageEnglish (US)
Pages (from-to)1231-1234
Number of pages4
JournalJournal of Rheumatology
Issue number7
StatePublished - Jul 2006


  • Cyclooxygenase-2
  • Korea
  • Polymorphism
  • Rheumatoid arthritis
  • Shared epitope

ASJC Scopus subject areas

  • Immunology and Allergy
  • Rheumatology
  • Immunology


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