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  • Title: TNF-alpha -308 promoter polymorphism in patients with rheumatoid arthritis.
    Author: Pawlik A, Florczak M, Ostanek L, Brzosko M, Brzosko I, Szklarz BG.
    Journal: Scand J Rheumatol; 2005; 34(1):22-6. PubMed ID: 15903021.
    Abstract:
    OBJECTIVES: Rheumatoid arthritis (RA) is a chronic inflammatory disease in which tumour necrosis factor-alpha (TNF-alpha) plays an important role. There are, however, controversial reports that TNF-alpha promoter polymorphism may be an independent marker of susceptibility and severity of RA. The aim of the present study was to examine the TNF-alpha -308 promoter polymorphism in patients with RA. METHODS: We examined 91 patients with RA diagnosed according to the criteria of the American College of Rheumatology. Polymerase chain reaction (PCR) amplification was used for analysis of the polymorphism at position -308 in promoter of TNF-alpha gene. RESULTS: Distribution of TNF-alpha genotypes in RA patients did not differ from that in control subjects. Moreover, there was no association between TNF-alpha genotypes and age at disease diagnosis, disease activity in global physician's assessment, and joint and extra-articular involvement. There was also no correlation between TNF-alpha polymorphism and disease activity measures, including erythrocyte sedimentation rate (ESR), CRP, number of swollen and tender joints, and morning stiffness duration. CONCLUSIONS: We suggest that TNF-alpha -308 promoter polymorphism is not a genetic risk factor for RA susceptibility and severity.
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