A cell-based assay for detection of anti-fibrillarin autoantibodies with performance equivalent to immunoprecipitation
Anti-fibrillarin autoantibodies are useful for the diagnosis and prognosis of systemic sclerosis (SSc).Anti-fibrillarin produces a clumpy nucleolar pattern in indirect immunofluorescence assay on HEp-2 cells (HEp-2 IFA).Here we develop and validate a reliable cell-based anti-fibrillarin assay (Fibrillarin/CBA) for use in clinical diagnostic laborat