Direct-Acting Antiviral Therapy and Improvement in Graft Survival of Hepatitis C Liver Transplant Recipients
Using the United Network for Organ Sharing (UNOS) registry, annual rates for AGF were analyzed among HCV and non-HCV LT recipients. AGF was defined as graft failure diagnosed within 1-year of LT surgery and documented in the UNOS registry.
From 2011 to 2016, there was a significant decline in the annual rate of AGF in HCV compared with non-HCV LT recipients (Figure 1). Notably, AGF rate in HCV group declined sharply in 2013 to 2014 by 26.3%. From 2014 to 2016 (DAA era), annual rates for AGF in HCV and non-HCV LT recipients were comparable and statistically insignificant (HCV 3.6% vs non-HCV 3.5; P = 0.85). For the first time in 2016, AGF rate in HCV LT recipients was observed to be lower than that in non-HCV (HCV 2.8% vs non-HCV 3.0%, P = 0.15) counterparts.
HCV LT recipients with AGF had a higher mortality rate (HCV 58.7% vs non-HCV 35.1%; P <0.001) and a lower retransplantation rate (HCV 39.7% vs non-HCV 54.4%; P < 0.001) during 2011 to 2016. In addition, HCV recipients also had a lower median donor age (HCV 40 years vs non-HCV 43 years; P <0.001). Temporal trends in mortality, retransplantation, or donor age were not observed during this study period.
Specific data regarding the use of DAA agents in the pretransplant and posttransplant setting were not available within the UNOS registry. Nevertheless, clinical guidelines have recommended the use of DAA therapy in this subpopulation.2,3 Widespread use of DAA agents for recurrent HCV infection including FCH can be contributing to the rapid decline in AGF among HCV LT recipients.