Results of a Randomized Controlled Trial Evaluating the Impact of Conversion to LCP Tacrolimus on Neurologic Toxicities in Liver Transplant Recipients.

Background/Aims: Neurotoxicity is commonly seen in liver transplant (LT) patients receiving tacrolimus. We sought to determine the impact of LCP tacrolimus on neurologic toxicity in LT recipients. Methods: This single-center, semiblinded, parallel group randomized controlled trial compared neurotoxicity burden in LT patients receiving immediate-release (IR) tacrolimus versus LCP tacrolimus. Thirty LT recipients transplanted between January 2020 and February 2022 were enrolled between 15 and 364 days posttransplant and followed for 6 months postrandomization. The primary endpoint was change from baseline to 6 months in composite Patient Global Impression of Improvement (PGI-I) score. Select secondary endpoints included change in Fahn-Tolosa-Marin (FTM) Tremor Rating Scale, IMAB-Q10, SF-12, and Medical Symptom Validity Test (MSVT) scores. Results: No significant differences were seen in composite PGI scores, though all patients saw improvement in overall PGI scores (IR -5 [-13.5 to -0.25] vs. LCP -4 [-9.5 to -0.5], Conclusions: Our study showed LCP tacrolimus had similar rates of neurotoxicity in LT recipients compared to IR without increasing the risk of rejection, graft loss, or mortality; these results suggest LCP tacrolimus can be a safe alternative in LT recipients. Trial Registration: ClinicalTrials.gov identifier: NCT03823768.