BTG3 and systemic sclerosis: In this cross‐sectional study, serum from 100 consecutive patients was subjected to indirect immunofluorescence (IIF) (HEp‐20‐10/primate liver mosaic) and Systemic Sclerosis Profile by EUROIMMUN to evaluate anti‐nuclear antibodies (ANA) and autoantibodies against 13 different autoantibodies in patients with SSc less than 3 years.