IntroductionElevated liver function tests (LFTs) are reported in individuals with cystic fibrosis (CF) starting elexacaftor/tezacaftor/ivacaftor (ETI). We report our experience with ETI in CF liver transplant patients. MethodAll CF liver transplant patients under the care of the Leeds CF team were commenced on ETI. Liver biopsies were performed when ALT >3 times upper limit of normal with or without bilirubin elevation. Treatment was guided by transplant hepatology and CF teams. Clinical data including lung function, LFTs and tacrolimus levels were collected. ResultsFour patients (3 male, 1 female) on tacrolimus were commenced on ETI. Median time post liver transplantation was 6.5 years. Three patients underwent liver biopsy. One biopsy was abnormal with immune-mediated liver injury, which responded to increased immunosuppression. Management of tacrolimus levels proved straightforward. ConclusionETI therapy in CF post liver transplant recipients was encouraging. Normal liver biopsy provides re-assurance to continue treatment despite elevated LFTs.