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Nomura, H. et al.

H. Nomura, Y. Miyagi, H. Tanimoto, H. Ishibashi,

Impact of early viral kinetics on pegylated interferon alpha 2b plus ribavirin therapy in Japanese patients with genotype 2 chronic hepatitis C.

The recommended therapy for genotype-2 chronic hepatitis C is a regimen of pegylated interferon alpha (peginterferon) plus ribavirin. This study was conducted to determine the value of early viral kinetics as a predictive factor for sustained virologic responder (SVR). Peginterferon alpha 2b (1.5 microg/kg/week) plus weight-based ribavirin (600-1000 mg/day) was administered to 51 patients with chronic HCV genotype 2 for 24 weeks. The HCV-RNA loads were measured at the baseline, hour 24, and week 1. The rebound index (RI, an index obtained from the viral load of week 1 divided by that of hour 24) was calculated. Compared with the baseline, the viral load at hour 24 for SVR was reduced by more than 1-log: it continued to decline thereafter, and at week 1 it was significantly lower than at hour 24 (P < 0.05). The viral load for non-SVR increased again between hour 24 and week 1. The SVR of patients with RI <or=1.0 was 100% (39/39). The SVR conversion for rapid virologic responders was 92% (35/38). The RI (<or=1.0) was the only significant independent factor for SVR by multiple logistic regression analysis and is the first predictive factor in 24-week peginterferon plus ribavirin therapy for patients infected with genotype 2.[1]

References

Impact of early viral kinetics on pegylated interferon alpha 2b plus ribavirin therapy in Japanese patients with genotype 2 chronic hepatitis C. Nomura, H., Miyagi, Y., Tanimoto, H., Ishibashi, H. J. Viral Hepat. (2009) [Pubmed]

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