Well-Controlled Hepatitis C No Dent on Lifespan

Medscape Medical News

Well-Controlled Hepatitis C No Dent on Lifespan

Laurie Barclay, MD
November 12, 2014

Survival in patients with chronic hepatitis C virus (HCV) infection and advanced fibrosis or cirrhosis who achieved sustained virological response (SVR) is similar to that of the general population, according to a retrospective study published in the November 12 issue of JAMA. However, patients who did not achieve SVR had lower life expectancy than their peers.

"Among patients with chronic HCV infection and bridging fibrosis or cirrhosis, attaining SVR was associated with survival comparable with that of the general population, whereas not attaining SVR was associated with reduced survival," write Adriaan J. van der Meer, MD, PhD, from the Erasmus MC University Medical Center Rotterdam, the Netherlands, and colleagues.

Previous studies have shown that patients with chronic HCV infection have a reduced lifespan compared with the general population. However, patients with chronic HCV infection and advanced hepatic fibrosis and SVR have a lower all-cause mortality than patients without SVR. What has not been clear until now is whether those patients with SVR have a shorter life expectancy than the general population.

Therefore, the investigators used data from a previous study to compare overall survival in patients with chronic HCV infection with and without SVR with that in the general population in the Netherlands, matched for age-, sex-, and calendar time-specific death rates. The sample consisted of 530 consecutive patients with chronic HCV monoinfection and biopsy-proven advanced hepatic fibrosis (Ishak fibrosis scores of 4, 5, or 6) who began interferon-based antiviral treatment between 1990 and 2003 at one of five large hepatology units in Europe and Canada.

At 24 weeks after patients stopped antiviral therapy, they underwent testing for SVR, defined as blood sample being negative for HCV RNA. Median duration of follow-up was 8.4 years, median age was 48 years, and 70% were male.

Of 454 patients (86%) with complete follow-up, 192 achieved SVR, 13 of whom died. Cumulative 10-year overall survival in patients who achieved SVR was 91.1%, which did not differ significantly from that in the age- and sex-matched general population.

Among patients who did not achieve SVR, there were 100 deaths, yielding a cumulative 10-year survival of 74.0%, which was significantly lower than that in the age- and sex-matched general population (P < .001).

Limitations of this study include its retrospective design, restriction to general population data available only for the Netherlands, and receipt of interferon-based therapy by all patients, limiting generalizability to those with other treatment regimens.

"The excellent survival among patients with advanced liver disease and SVR might be explained by the associations between SVR and regression of hepatic inflammation and fibrosis, reduced hepatic venous pressure gradient, reduced occurrence of hepatocellular carcinoma and liver failure, as well as reduced occurrence of diabetes mellitus, end-stage renal disease, and cardiovascular events," the study authors write. "Even though patients with cirrhosis and SVR remain at risk for hepatocellular carcinoma, the annual hepatocellular carcinoma incidence is low and survival is substantially better compared with those without SVR. Competing risks could also contribute."

The Foundation for Liver and Gastrointestinal Research in Rotterdam, the Netherlands, funded this study. Some of the study authors reported various financial disclosures involving Merck Sharp & Dohme, Gilead, Roche, Abbott, Novartis, Bristol-Myers Squibb, Hoffmann-LaRoche, Tibotec, Vertex, Clinical Care Options, Bayer, Novartis, Transgene, Achillion, AstraZeneca, Boehringer Ingelheim, Santaris, Janssen, Idenix, Presidio, Anadys, and/or Medtronic.

JAMA. 2014;32:1927-1928. Abstract