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Life Expectancy after Liver Transplantation for Non-Cirrhotic Hepatocellular Carcinoma
Robert M Shavelle1, Ji Hun Kwak1, Rachel Saur1
1Life Expectancy Project, San Francisco, CA, USA.
Background:
Hepatocelluar carcinoma typically occurs with underlying cirrhosis. However roughly 20% of cases arise in a non-cirrhotic liver. There is limited literature that addresses the long-term survival of the narrow subgroup who received transplantation. For such patients we sought to calculate life expectancies both at time of transplant and several years later, stratified by key risk factors, and to determine if survival has improved in recent years. Such information can be helpful in making treatment decisions.
Methods:
Data on 4,373 non-cirrhotic HCC patients who underwent liver transplantation in the MELD era (2002-2018) from the United States OPTN database were analyzed using the Cox proportional hazards regression model and life table methods.
Results:
Demographic and past medical history factors related to survival were patient age, donor age over 20, and the presence of ascites or severe hepatic encephalopathy. Survival did not vary by race or sex. HCC-specific factors significantly related to survival were the total number of tumors, extrahepatic spread, lymph node involvement, satellite lesions, micro- or macrovascular invasion, tumor differentiation (grade), and pre-transplant treatment. Survival improved over the study period, at 4% per calendar year during the first 5 years post transplant and 1% per year thereafter.
Conclusions:
Life expectancy in non-cirrhotic HCC transplant patients is much reduced from normal, and varies according to age and tumor-related factors. Survival improved modestly over the study period.
