VIM and rheumatoid arthritis: The non-interventional studies aim at the identification and quantification of the prevalence of anti-citrullinated proteins antibodies directed against different citrullinated antigens, including collagen, fibrinogen, filaggrin or vimentin, to evaluate their diagnostic and prognostic value in rheumatoid arthritis progression (Table 5, NCT01078597, NCT03265236, NCT03224377).