Prevalence and distribution of autoimmune diseases in 368 rheumatoid arthritis families.

Abstract

International audienceTo investigate whether frequency of rheumatoid arthritis (RA) and/or other autoimmune (AI) disorders was increased in RA French Caucasian families among the first- (FDR) and second-degree relatives (SDR), and to test whether the presence of AI disease family history identified a specific RA subset