ERBB2 and primary biliary cholangitis: The composition of subtypes was significantly different between PBC and CBC; the percentage of the HR+/ERBB2− subtype decreased from 110 patients (41.67%) in PBC to 82 patients (31.06%) in CBC (P = 0.01), whereas ERBB2+ subtypes regardless of HR status increased from 68 patients (25.76%) to 93 patients (35.23%) (P = 0.01).