Entecavir: a new treatment for chronic hepatitis B infection
Authors: Schreibman, Ian R; Schiff, Eugene R
Source: Future Virology, Volume 1, Number 5, September 2006 , pp. 541-552(12)
Publisher: Future Medicine
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Abstract:
Hepatitis B virus can cause both acute and chronic liver disease in humans. Entecavir, a new, potent, orally administered guanosine analog for the treatment of chronic hepatitis B, has recently approved in the USA and Europe. Monotherapy with entecavir in nucleoside-naive patients has been associated with statistically superior histological improvement, greater reduction in hepatitis B virus-DNA levels, and improved normalization of alanine aminotransferase levels when compared with lamivudine. After 2 years of treatment, viral resistance to entecavir has not developed in the antiviral-naive patient population. Similar findings in terms of efficacy have also been observed in patients with lamivudine-resistant hepatitis B virus. The use of entecavir in the lamivudine-resistant patient population could lead to the development of entecavir-resistant mutants at the rate of 9% by 2 years. Entecavir is well tolerated with a good safety profile and should be considered as primary therapy for chronic hepatitis B. Entecavir may also be considered for use in the lamivudine-resistant patient at twice the dose recommended for nucleoside-naive patients, with the recognition that virologic breakthrough could develop.Keywords: adefovir; chronic infection; entecavir; hepatitis B; interferon; lamivudine; nucleoside analog; nucleotide analog; resistance; treatment
Document Type: Drug Evaluation
DOI: 10.2217/17460794.1.5.541
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