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Artículos socios - Artículos
Cyclooxygenase-2 polymorphisms confer susceptibility to sarcoidosis but are not related to prognosis.
01/03/2009
Lopez-Campos JL, Rodriguez-Rodriguez D, Rodriguez-Becerra E, Alfageme Michavila I, Guerra JF, Hernandez FJ, Casanova A, Fernández de Córdoba Gamero J, Romero-Ortiz A, Arellano-Orden E, Montes-Worboys A.
Respir Med 2009; 103(3): 427-433.

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.


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