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lüll Antinuclear antibodies giving the multiple nuclear dots or the rim-like/membranous patterns: diagnostic accuracy for primary biliary cirrhosis Granito A; Muratori P; Muratori L; Pappas G; Cassani F; Worthington J; Guidi M; Ferri S; DE Molo C; Lenzi M; Chapman RW; Bianchi FBAliment Pharmacol Ther 2006[Dec]; 24 (11-12): 1575-83BACKGROUND: Serum antinuclear antibodies giving the 'multiple nuclear dots' or the 'rim-like/membranous' patterns are frequently detected by indirect immunofluorescence on HEp-2 cells in patients with primary biliary cirrhosis. AIM: To assess the accuracy of multiple nuclear dot and rim-like/membranous antinuclear antibodies for the diagnosis of primary biliary cirrhosis. METHODS: Sera from 4371 consecutive patients referred to our laboratory were analysed under code for antinuclear antibodies testing by indirect immunofluorescence on HEp-2 cells. RESULTS: Review of the clinical records of the 4371 patients allowed identification of 101 patients with antimitochondrial antibody-positive primary biliary cirrhosis and 22 with antimitochondrial antibody-negative variant. Multiple nuclear dot and/or rim-like/membranous patterns were found in 59 (1.3%) of the 4371 patients: 31 antimitochondrial antibody-positive primary biliary cirrhosis, 17 antimitochondrial antibody-negative primary biliary cirrhosis and 11 non-primary biliary cirrhosis. The specificity for primary biliary cirrhosis of both the antinuclear antibodies pattern was 99%. Positive predictive value and likelihood ratio for a positive test were 86% (95% CI: 72.7-94) and 221 (95% CI: 91.7-544) for multiple nuclear dot, 79% (95% CI: 62.2-90.1) and 132 (95% CI: 56.8-312.7) for rim-like/membranous, respectively. CONCLUSIONS: Multiple nuclear dot and rim-like/membranous antinuclear antibodies are rare findings. Their positivity strongly suggests the diagnosis of primary biliary cirrhosis, irrespective of antimitochondrial antibody status. The high specificity for primary biliary cirrhosis makes them a useful diagnostic tool especially in antimitochondrial antibody-negative patients.|Adult[MESH]|Aged[MESH]|Aged, 80 and over[MESH]|Autoantibodies/*blood[MESH]|Female[MESH]|Fluorescent Antibody Technique, Indirect/*methods/standards[MESH]|Humans[MESH]|Liver Cirrhosis, Biliary/*diagnosis[MESH]|Male[MESH]|Middle Aged[MESH]|Sensitivity and Specificity[MESH] |