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  • Title: TNF-308A and HLA-DR3 alleles contribute independently to susceptibility to systemic lupus erythematosus.
    Author: Rood MJ, van Krugten MV, Zanelli E, van der Linden MW, Keijsers V, Schreuder GM, Verduyn W, Westendorp RG, de Vries RR, Breedveld FC, Verweij CL, Huizinga TW.
    Journal: Arthritis Rheum; 2000 Jan; 43(1):129-34. PubMed ID: 10643708.
    Abstract:
    OBJECTIVE: To evaluate the respective contributions of tumor necrosis factor (TNF) promoter polymorphisms and HLA-DR alleles to susceptibility to systemic lupus erythematosus (SLE). METHODS: TNF-238G/A and 308G/A promoter polymorphisms and HLA-DRB1 alleles were determined in 99 consecutive Caucasian SLE patients and 177 Caucasian controls. Standard and Mantel-Haenszel odds ratios were calculated to assess the magnitude of the susceptibility factors. The presence or absence of the SLE classification criteria was determined and correlated with the TNF promoter and HLA-DRB1 genotypes. RESULTS: The frequency of the TNF-308A/A and 308G/A genotypes was significantly higher in SLE patients (odds ratio 5.0). Conversely, TNF-238G/A and 238A/A genotypes were equally prevalent in SLE patients and controls. The HLA-DR3 specificity (DRBI*0301 allele) was significantly more prevalent in the SLE population (odds ratio 4.4). Stratification to correct for interdependence of the 2 loci confirmed the association of both TNF-308A and HLA-DR3 with SLE (Mantel-Haenszel odds ratio 3.2 and 2.4, respectively). No correlation was found between TNF promoter and HLA-DRB1 genotypes and any SLE classification criterion or disease manifestation. CONCLUSION: TNF-308A and HLA-DR3 alleles are independent susceptibility factors for SLE.
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