Efficacy and Safety of Sofosbuvir in the Treatment of Chronic Hepatitis C: The Dawn of a New Era

ISSN: 1876-1038 (Online)
ISSN: 1574-8871 (Print)


Volume 9, 4 Issues, 2014


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Reviews on Recent Clinical Trials

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Editor-in-Chief:
Alberto Zaniboni
Oncologia Medica, Fondazione Poliambulanza
Berscia
Italy


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Efficacy and Safety of Sofosbuvir in the Treatment of Chronic Hepatitis C: The Dawn of a New Era

Author(s): Ivan Gentile, Federico Borgia, Emanuela Zappulo, Antonio Riccardo Buonomo, Anna Maria Spera, Giuseppe Castaldo and Guglielmo Borgia

Affiliation: Department of Clinical Medicine and Surgery (Ed. 18), University of Naples “Federico II”, via S. Pansini 5, I-80131 Naples, Italy.

Abstract

Hepatitis C virus (HCV) infection affects about 160 million people worldwide. Currently, it is treated with pegylated interferon (PEG-IFN) plus ribavirin, associated with a protease inhibitor in case of genotype 1 infection. However, this combination is often contraindicated and associated with severe adverse events that limit its use in clinical practice. Several drugs active against HCV are in an advanced phase of clinical development. Among these, sofosbuvir appears one of the most promising candidates for use in association with both interferon and interferon-free combinations. This review focuses on the results of several sofosbuvir-based phase III trials that have very recently become available. These studies show that the co-administration of sofosbuvir, PEG-IFN and ribavirin for 12 weeks is associated with a very high rate of sustained virological responses (SVR) (about 90%) in naïve patients with genotypes 1, 4, 5 or 6. In patients infected by genotypes 2 or 3, the interferon-free combination of sofosbuvir and ribavirin administered for 12 weeks is associated with a SVR of 97% and 56% in naïve patients, and of 86% and 30% in experienced genotype 2 or 3 patients, respectively. The safety and tolerability profile is optimal and consistent with that of the other drugs administered in the combination (ribavirin and/or interferon). In conclusion, the recent phase III trials of sofosbuvir confirm the excellent results of phase II studies in terms of efficacy and safety and will probably open a new era in the fight against HCV.

Keywords: HCV, interferon, interferon-free combination, polymerase inhibitors, randomized clinical trial, sofosbuvir.

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Article Details

Volume: 9
Issue Number: 1
First Page: 1
Last Page: 7
Page Count: 7
DOI: 10.2174/1574887108666131213120354
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