To evaluate the clinical and serological heterogeneity in patients with anticentromere antibodies (ACA). One hundred twenty patients with ACA were analyzed retrospectively. ACA were detected initially on the basis of indirect immunofluorescence on HEp-2 cells, and then antibodies to CENP-B were measured by ELISA. Antibodies to other nuclear antigens were also detected by double immunodiffusion and/or ELISA. Eighty-four patients (70.0%) had systemic sclerosis (SSc; scleroderma) and 36 patients (30.0%) had other rheumatic diseases or miscellaneous disorders. Among patients with SSc, 35 patients (41.7%) had SSc in overlap mostly with Sjögren's syndrome (SS), in part with rheumatoid arthritis and/or primary biliary cirrhosis (PBC). Five of 36 patients (13.9%) without SSc also had overlap syndrome of more than 2 rheumatic diseases or PBC. All CREST features (calcinosis, Raynaud's, esophageal dysmotility, sclerodactyly, telangiectasias) were found significantly more in SSc than in...
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