Association of rheumatoid factors and anti‐filaggrin antibodies with severity of erosions in rheumatoid arthritis

Abstract

Since no significant correlation was observed between joint damage progression and AFA positivity, the determination of AFA does not appear to be useful in assessing the prognosis of RA. However, AFA, which appear early in RA, could be helpful for the diagnosis of RA in patients who do not fulfil four American College of Rheumatology criteria.