HLA-DRB1 shared epitope alleles in patients with rheumatoid arthritis: relation to autoantibodies and disease severity in a south Indian population.

Abstract excerpt

AIM: To investigate the presence of the 'shared epitope' (SE) in the HLA-DRB1 alleles in patients with RA and to ascertain the frequency of the HLA-DRB1 alleles with autoantibodies (anti-cyclic citrullinated peptide [anti-CCP] rheumatoid factor [RF]) and disease severity. METHODS: A total of 200 RA patients and 200 apparently healthy subjects participated in the study. HLA-DRB1 were genotyped using polymerase...

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