Background
Fenofibrate (FF) has shown biochemical benefit in primary biliary cholangitis (PBC) patients with a suboptimal response to ursodeoxycholic acid (UDCA), but the long-term efficacy on survival remains unknown.
Methods
In this retrospective cohort study, we evaluated the efficacy and safety of the long-term effects of FF add-on therapy in PBC patients with a suboptimal response to UDCA, with special focus on the long-term survivals analyzed by Kaplan-Meier plotting and log-rank test.
Results
We enrolled 121 PBC patients with a suboptimal response to UDCA, with 57 patients continuing the UDCA monotherapy, and 64 patients receiving FF add-on therapy (200 mg/d). After one year of treatment, the FF add-on group had a more remarkable improvement in the serum levels of alkaline phosphatase (ALP) and gamma-glutamyl transferase (GGT) than the UDCA monotherapy group. Significant improvements in serum alanine aminotransferase (ALT), total bilirubin (TBIL), albumin (ALB), lipid, and immunoglobulins were only found in the FF add-on group, with ALP normalized in 60.9% and both ALP and TBIL normalized in 45.3% of the patients. Importantly, compared with UDCA monotherapy group, FF add-on therapy was associated with a significant improvement in 5- (89.7% vs 75.3%) and 10- (87.0% vs 47.6%) year transplant-free survivals (HR: 0.3282, 95% CI: 0.1334–0.8073, P < 0.05). Twenty-one cases (25.6%) developed adverse events during the follow-up, with liver injury being the most frequent one.
Conclusions
FF add-on therapy improves not only biochemical responses but also long-term transplant-free survival in PBC patients with suboptimal response to UDCA. However, liver and renal injuries need to be closely monitored and properly managed.