[Research advances in primary biliary cholangitis].

Primary biliary cholangitis (PBC) is a chronic cholestatic disease with unknown pathogenesis. Positive anti-mitochondrial antibody has high sensitivity and specificity in the diagnosis of this disease. Ursodeoxycholic acid is mainly used for the treatment of PBC, but 40% of patients have an unsatisfactory biochemical response to this drug. 6-Ethylchenodeoxycholic acid is a new drug approved for the treatment of PBC, and liver transplantation remains the only effective method for the treatment of patients with end-stage PBC.