Benefit of interferon therapy in hepatocellular carcinoma prevention for individual patients with chronic hepatitis C

Yoshida, H.; R.Tateishi; Arakawa, Y.; Sata, M.; Fujiyama, S.; Nishiguchi, S.; Ishibashi, H.; Yamada, G.; Yokosuka, O.; Shiratori, Y.; Omata, M.
March 2004
Gut;Mar2004, Vol. 53 Issue 3, p425
Academic Journal
Background: An increase in the incidence of hepatocellular carcinoma (HCC) in Japan since the 1980s suggests an imminent outbreak in other countries where viral spread occurred more recently. Interferon therapy for chronic hepatitis C, in general, has been shown to prevent HCC. Aims: To determine the scale of benefit in individual patients. Subjects: Histologically proven chronic hepatitis C patients in the Inhibition of Hepatocarcinogenesis by Interferon Therapy (IHIT) cohort (Ann Intern Med 1 999;131 :174), as updated in March 2003. Methods: The lifetime risk for HCC was calculated based on HCC incidence rates, stratified by sex, age, fibrosis stage, and outcome of interferon therapy. The gain in HCC free survival was defined as the difference between expected HCC free survival with sustained virological response and that without. Results: The gain in HCC free survival was greater when a patient was younger and fibrosis was more advanced. For example, a 30 year old male with F3 fibrosis gained 12.4 years by attaining sustained response while a patient with F1 fibrosis older than 60 years gained less than one year. For a treatment protocol with a given sustained response rate, prior estimation of the gain can be obtained by multiplying the calculated HCC free survival for responders by the response rate. Conclusions: The gain in HCC free survival may serve as an indicator of the benefit of interferon therapy in terms of HCC prevention and be useful in the consideration of indication and selection of treatment protocol for individual patients.


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