Interleukin-6 levels and their haplotypes are associated with serological autoantibodies status and clinical activity in rheumatoid arthritis
IntroductionInterleukin-6 (IL-6) plays an important role in the pathogenesis, progression, and severity of rheumatoid arthritis (RA). High levels of IL-6 are involved in the maintenance of inflammation in the synovium and the development of new blood v…