Cyclooxygenase-2 polymorphisms confer susceptibility to sarcoidosis but are not related to prognosis

Respir Med. 2009 Mar;103(3):427-33. doi: 10.1016/j.rmed.2008.09.014. Epub 2008 Nov 29.


Background: The aim of this multicenter study was to investigate the relationship between single nucleotide polymorphisms (SNPs) of the cyclooxygenase-2 (COX2) gene and susceptibility to sarcoidosis, as well as the relation between these SNPs and the evolution of the disease.

Material and methods: This multicenter investigation involved seven hospitals in Spain. We used a case-control design followed by a prospective follow-up study. Sarcoid patients were recruited from the participating institutions during outpatient routine visits. Age- and gender-matched control subjects were recruited mainly from among outpatients attending the participating hospitals. Four SNPs in the COX2 gene (COX2.5909 T > G, COX2.8473 T > C, COX2.926 G > C, and COX2.3050 G > C) were genotyped using fluorescent hybridization probes among 131 patients with sarcoidosis (63 males; mean age: 47 +/- 15 years) and 157 healthy controls (83 males; mean age: 50 +/- 16 years). We employed a binomial multiple logistic regression analysis to test the association between the selected SNPs and disease susceptibility. The clinical, functional and radiological prognosis of the sarcoidosis patients was determined after a mean follow-up of 37.4 +/- 30.4 months.

Results: Carriers of the homozygous CC genotype of the COX2.8473 T > C polymorphism had a higher risk of sarcoidosis compared with TT carriers (OR: 3.08; 95% CI: 1.2-7.7; p = 0.035). 84% of patients achieved improvement or complete remission at follow-up. No association between the investigated SNPs and prognosis was seen.

Conclusions: Our data suggest that the homozygous CC genotype of the COX2.8473 T > C polymorphism may be associated with sarcoidosis susceptibility. No significant association with prognosis was detected.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Alleles
  • Base Sequence
  • Case-Control Studies
  • Chi-Square Distribution
  • Cyclooxygenase 2 / genetics*
  • DNA Primers
  • Disease Progression
  • Female
  • Follow-Up Studies
  • Gene Frequency
  • Genetic Predisposition to Disease
  • Genotype
  • Humans
  • Lung / diagnostic imaging
  • Male
  • Middle Aged
  • Molecular Sequence Data
  • Polymorphism, Single Nucleotide*
  • Prognosis
  • Proportional Hazards Models
  • Prospective Studies
  • Radiography
  • Sarcoidosis, Pulmonary / diagnostic imaging
  • Sarcoidosis, Pulmonary / genetics*


  • DNA Primers
  • Cyclooxygenase 2