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Κυριακή 13 Μαΐου 2018

Impact of Early Initiated Everolimus on the Recurrence of Hepatocellular Carcinoma after Liver Transplantation

Background Many centers implement everolimus-based immunosuppression in liver transplant patients with hepatocellular carcinoma. We aimed to explore the potential impact of early initiated everolimus on tumor recurrence after liver transplantation. Methods This study included 192 patients with hepatocellular carcinoma undergoing liver transplantation among who 64 individuals were prospectively enrolled (2012-2015) and received early initiated everolimus (ie, started between postoperative day 15 to 21), while the remaining 128 patients acted as historical controls without everolimus. Propensity score matching was performed to ensure comparability. Multivariate Cox's regression and competing risks analysis were used to control for potential confounders. Results Patients with and without everolimus were comparable in terms of number of nodules (p=0.37), total tumor diameter (p=0.44), Milan criteria fulfillment (p=0.56) and histological differentiation (p=0.61), but there were increased microvascular invasion rates in the everolimus group (26.5% vs 13.3%; p=0.026). Tumor recurrence rates were similar with and without everolimus (10.9% vs 9.9% at 36 months respectively; p=0.18). After controlling for microvascular invasion among other potential confounders, everolimus had no significant impact on tumor recurrence, neither in the multivariate Cox regression (RR=3.23; p=0.09), nor in the competing risks analysis for tumor recurrence-death (RR=1.02; p=0.94). Patients receiving everolimus had reduced tacrolimus trough concentrations and lower serum creatinine within the first 18 months post-LT. Conclusion Everolimus may not be universally prescribed to prevent tumor recurrence in liver transplant patients with hepatocellular carcinoma. Future randomized trials should be focused on patients with histological features of increased tumor aggressiveness, in whom the potential benefit would be higher. These authors contributed equally to the present manuscript, Manuel Rodríguez-Perálvarez, PhD and Marta Guerrero, MD. CORRESPONDENCE INFORMATION: Prof. Manuel de la Mata, MD, PhD. Head of Department of Hepatology and Liver Transplantation at the Reina Sofía University Hospital, Córdoba, Spain. Address: Avda/Menéndez Pidal s/n, Postal code 14004, Córdoba, Spain. E-mail: mdelamatagarcia@gmail.com. Manuel De la Mata and Manuel Rodríguez-Perálvarez conceived the original idea and designed the study. Lydia Barrera, Gustavo Ferrín, María D. Ayllón, Gonzalo Suárez-Artacho, Carmen Bernal and Juan M. Pascasio enrolled patients and acquired the data. Manuel Rodríguez-Perálvarez, Marta Guerrero and Antonio Poyato analyzed the data. Manuel Rodríguez-Perálvarez and Marta Guerrero drafted the manuscript. Jose L. Montero, Javier Briceño, Javier Padillo, Luis M. Marín-Gómez and Manuel De la Mata critically revised the manuscript for important intellectual content. DISCLOSURE: The authors have no conflict of interest to disclose regarding the present manuscript. FUNDING: The present study was supported by the Instituto de Salud Carlos III (FIS PI11-02867 and PI14/01469) and co-funded by FEDER. Additional funding was granted by the Andalusian Society for Organ Transplantation (SATOT). M.R-P is a recipient of the Physician Scientist Fellowship awarded by the European Association for the Study of the Liver (EASL). The financial sources listed above had no vested interest in the results of the study. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.

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