Effect of long-term interferon therapy for refractory chronic hepatitis c: preventive effect on hepatocarcinogenesis
Saito, Y.; Saito, H.; Tada, S.; Nakamoto, N.; Horikawa, H.; Kurita, S.; Kitamura, K.; Ebinuma, H.; Ishii, H.; Hibi, T.
Hepato-Gastroenterology 52(65): 1491-1496
2005
ISSN/ISBN: 0172-6390 PMID: 16201104 Document Number: 589847
Background/Aims: Effect of interferon (IFN) therapy for refractory chronic hepatitis C is not sufficient. For patients with persistent hepatitis C virus (HCV) infection, one of the clinical goals,is prevention of,progression to liver cirrhosis (LC),and hepatocellular carcinoma (HOC). In this study, we evaluated effect of long-term IFN administration for refractory chronic hepatitis C.Methodology: The patients who were positive for HCV of genotype 1b in high viral load and failed in HCV elimination by standard IFN therapy were retrospectively analyzed. The patients were divided into three groups according to administration duration of IFN therapy. The patients in group 1, 2 and 3 received IFN therapy for 6 months, 6-24 months and more than 24 months, respectively.Results: The normalization rate of alanine aminotransferase (ALT) levels less than twice that of the normal limit 6 months after the treatment was highest in group 3 (85%). The platelet counts in group I gradually decreased more than 3x16(4)/mu L from the pretreatment levels at 100 months after the start of treatment. Cumulative hepatocarcinogenesis rate in groups 1, 2 and 3 were 34.7%, 5.9% and 0%, respectively. We found distinct improvement in both ALT levels and histopathological findings in the case that received the longest term of IFN therapy (91 months).Conclusions: Long-term IFN therapy is effective in preventing hepatocareinogenesis through reduction of chronic necroinflammation and accumulation of fibrosis in the liver and may be a good indication even for refractory chronic hepatitis C.