Pegylated interferon plus ribavirin for genotype Ib chronic hepatitis C in Japan

2008 
AIM: To evaluate the efficacy of pegylated interferon α-2b (peg-IFNα-2b) plus ribavirin (RBV) therapy in Japanese patients with chronic hepatitis C (CHC) genotype Ib and a high viral load. METHODS: One hundred and twenty CHC patients (58.3% male) who received peg-IFNα-2b plus RBV therapy for 48 wk were enrolled. Sustained virological response (SVR) and clinical parameters were evaluated. RESULTS: One hundred (83.3%) of 120 patients completed 48 wk of treatment. 53 patients (44.3%) achieved SVR. Early virological response (EVR) and end of treatment response (ETR) rates were 50% and 73.3%, respectively. The clinical parameters (SVR vs non-SVR) associated with SVR, ALT (108.4 IU/L vs 74.5 IU/L, P = 0.063), EVR (76.4% vs 16.4%, P 56 years), SVR in females was significantly lower than that in males (17% vs 50%, P = 0.0262). EVR and adherence to Peg-IFN were demonstrated to be the main factors associated with SVR. CONCLUSION: Peg-IFNα-2b plus RBV combination therapy demonstrated good tolerability in Japanese patients with CHC and resulted in a SVR rate of 44.3%. Treatment of elderly female patients is still challenging and maintenance of adherence to peg-IFNα-2b is important in improving the SVR rate.
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