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Efficacy and Tolerance of Interferon β Plus Ribavirin Treatment for Chronic Hepatitis C Patients with Depression or Thrombocytopenia Comparison with Pegylated Interferon α Plus Ribavirin Treatment

Hiroaki Ikezaki, Norihiro Furusyo, Eiichi Ogawa, Motohiro Shimizu, Satoshi Hiramine, Kazuya Ura, Fujiko Mitsumoto, Kouji Takayama, Kazuhiro Toyoda, Masayuki Murata and Jun Hayashi

Objective: Limited data has been reported comparing natural human interferon β (nIFNβ) and pegylated IFN-α (PEG-IFNα) when Ribavirin (RBV) is combined. This case-control study was done to compare the efficacy and adverse effects of a combination treatment of nIFNβ or PEG-IFNα plus RBV for chronic hepatitis C patients.

Methods: Sixty patients with chronic hepatitis C, 42 infected with hepatitis C virus (HCV) genotype 1 and 18 infected with genotype 2, were treated with nIFNβ plus RBV. Of them, 23 (38.3%) suffered pre-treatment severe depression. Their data was compared with 60 undepressed patients treated with a combination of PEG-IFNα plus RBV. nIFNβ was given intravenously and PEG-IFNα was injected subcutaneously.

Results: Sustained virological response (undetectable HCV RNA at 24 weeks after the end of treatment) did not significantly differ between the nIFNβ and PEG-IFNα treated patients (genotype 1, 21.4% vs. 33.3%, P=0.328; genotype 2, 72.2% vs. 88.9%, respectively, P=0.402). None of the nIFNβ treated patients showed exacerbation of depression, while 7 (11.7%) of 60 PEG-IFNα treated patients developed severe depression or malaise. The platelet count of nIFNβ treated patients increased to higher than baseline after week 8, but the platelet count of PEG-IFNα treated patients decreased throughout the treatment. There were significant differences of the changes of platelet counts between the both groups throughout the treatment (all P<0.001).

Conclusion: nIFNβ plus RBV treatment was well tolerated by chronic hepatitis C patients with depression or thrombpcytopenia.