Survival of patients with HCV cirrhosis and sustained virologic response is similar to the general population

Abstract

Background & aims: Life expectancy of patients with compensated hepatitis C virus (HCV) cirrhosis achieving sustained virologic response (SVR) is limited by liver events as compared to the general population. Thus, survival benefit of SVR remains to be measured.

Methods: The study includes prospective surveillance data from three cohorts of Italian patients with compensated HCV cirrhosis who achieved SVR on an interferon-based (IFN) regimen, compared to simultaneously observed non-SVR, untreated and decompensated patients. Overall survival was calculated from the date of start of IFN to death. The number of deaths expected during the at-risk period was determined by applying age- and sex-specific mortality rates recorded in Italy for person-years adequate for the enrolment period. The standardized mortality ratio (SMR) determined the relative risk of death over that of the age and sex matched general population.

Results: Overall, 28/181 patients followed-up for a median period of 9.6years (range 1-25years) died. The 10 and 20-year overall survival rates for the whole series were 90.9% (95% CI, 84.3-94.8) and 62.9% (95% CI, 45.9-75.9), respectively. The number of expected deaths in the corresponding age and sex matched general population was 28.1, corresponding to a SMR=1.00 (95% CI, 0.72-1.35), with an SMR for non-SVR patients of 3.85 (95% CI, 3.43-4.30), for untreated of 3.01 (95% CI, 2.64-3.42) and for decompensated of 6.70 (95% CI, 5.39-8.22).

Conclusions: Patients with compensated HCV cirrhosis achieving SVR by IFN obtain a main benefit levelling their survival curve to that of the general population. Wider applicability of IFN-free regimens will possibly make this achievement more generalizable.

Keywords: Antiviral therapy; DAA’s; HCV-related cirrhosis; IFN-based therapy; SVR.