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Entecavir for chronic hepatitis B: a review
1Clinic of Paediatrics, Hospital of Sondrio, Foggia, Italy. emipalu2003@yahoo.it
Therapeutic Drug Monitoring
|January 29, 2008
Summary
Entecavir is a potent antiviral for chronic hepatitis B, showing superior efficacy over lamivudine in clinical trials. It effectively inhibits viral DNA replication, offering a valuable treatment option for various patient groups.
Area of Science:
- Hepatology
- Virology
- Pharmacology
Background:
- Chronic hepatitis B is managed with nucleotide/nucleoside analogs like lamivudine, adefovir dipivoxil, and entecavir.
- Lamivudine and adefovir offer safety and oral administration but limited sustained responses post-therapy.
- Entecavir represents a potent therapeutic option for chronic hepatitis B virus (HBV) infection.
Purpose of the Study:
- To evaluate the efficacy and safety of entecavir in treating chronic hepatitis B.
- To compare entecavir's effectiveness against lamivudine in diverse patient populations.
- To assess entecavir's role in managing nucleoside-naive and lamivudine-resistant HBV infections.
Main Methods:
- Phase II and III clinical trials were conducted to assess entecavir's performance.
- Comparative analysis against lamivudine was performed for primary efficacy endpoints.
- Patient populations included nucleoside-naive and lamivudine-resistant individuals, both HBeAg-positive and HBeAg-negative.
Main Results:
- Entecavir demonstrated superiority over lamivudine across all primary endpoints in clinical trials.
- Efficacy was observed in both nucleoside-naive and lamivudine-resistant patient groups.
- Evidence of viral resistance to entecavir was reported in only one trial.
Conclusions:
- Entecavir is a highly effective treatment for chronic hepatitis B, outperforming lamivudine.
- The drug inhibits HBV DNA polymerase, impacting viral replication at multiple stages.
- Entecavir offers a significant therapeutic advance for patients with chronic HBV, including those with prior treatment resistance.
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