Fenofibrate Combined With Ursodeoxycholic Acid in Subjects With Primary Biliary Cholangitis

Inclusion Criteria: * Must have provided written informed consent; * Age 18-75 years; * BMI 17-28 kg/m2 * Male or female with a diagnosis of PBC, by at least two of the following criteria: * History of AP above ULN for at least six months; * Positive AMA titers (\>1/40 on immunofluorescence or M2 positive by enzyme linked immunosorbent assay (ELISA) or positive PBC-specific antinuclear antibodies; * Documented liver biopsy result consistent with PBC. * Incomplete response to UDCA defined by Xi'an criteria (ALP \>2.5× ULN, AST\>2×ULN or TBIL\>1×ULN) after UDCA treatment for 4-6 weeks with at least one abnormal test in ALP or TBIL. Exclusion Criteria: * History or presence of other concomitant liver diseases. * ALT/AST \> 5×ULN, TBIL \> 3×ULN. * If female: known pregnancy, or has a positive urine pregnancy test (confirmed by a positive serum pregnancy test), or lactating. * Allergic to fenofibrate or ursodeoxycholic acid. * Taking hepatotoxic drugs (e.g., dapsone, erythromycin, fluconazole, ketoconazole, rifampicin) for more than 2 weeks within 6 months, and long-term hormonal users. * Recurrent variceal bleeding, poorly controlled hepatic encephalopathy or refractory ascites. * Patients with a history of severe cardiac, cerebrovascular, renal, respiratory disease or functional failure, and psychiatric disorders (including those due to alcohol and drug abuse). * Creatinine \>1.5×ULN and creatinine clearance \<60 ml/min. * Currently using statins (such as pravastatin, fluvastatin, and simvastatin), other fibrates (such as gemfibrozil and bezafibrate), and drugs structurally similar to fenofibrate (like ketoprofen). * Planned to receive an organ transplant or an organ transplant recipient. * Needing Liver transplantation within 1 year according to the Mayo Rick score. * Any other condition(s) that would compromise the safety of the subject or compromise the quality of the clinical study, as judged by the Investigator.