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Experience with Entecavir Therapy for Lamivudine-Resistant Chronic Hepatitis B in Korean Children and Adolescents  

Cho, Seung-Man (Department of Pediatrics, Kyungpook National University School of Medicine)
Choe, Byung-Ho (Department of Pediatrics, Kyungpook National University School of Medicine)
Chu, Mi-Ae (Department of Pediatrics, Kyungpook National University School of Medicine)
Kim, Jung-Mi (Department of Pediatrics, Kyungpook National University School of Medicine)
Publication Information
Pediatric Gastroenterology, Hepatology & Nutrition / v.13, no.1, 2010 , pp. 44-50 More about this Journal
Abstract
Purpose: To estimate the viral suppressive effect of entecavir monotherapy in Korean children and adolescents with lamivudine-resistant chronic hepatitis B (CHB). Methods: One milligram of entecavir was administered once daily to 6 patients (4 boys; mean age, 17.5 years; range, 15.10~24.6 years) with lamivudine-resistant CHB for a mean duration of therapy of 13.4 months (range, 1~21.1 months). The therapeutic results were compared with 11 patients who received adefovir (0.3 mg/kg/day [maximal dose 10 mg]) for at least 12 months (mean, 33.4 months; range, 12.4~58.3 months). The serum HBV DNA level and serologic markers were measured every 2 months. Results: The interval to a HBV DNA titer decrement (>1 $log_{10}$) was 1.2${\pm}$0.2 and 4.4${\pm}$5.2 months (p=0.185) for the entecavir and adefovir groups, respectively. The interval to a HBV DNA titer decrement (>2 $log_{10}$) was 2.4${\pm}$2.3 and 9.2${\pm}$7.3 months (p=0.025), for the entecavir and adefovir groups, respectively. Conclusion: The therapeutic efficacy of entecavir was favorable in children and adolescents, especially in shortening the interval to a >2 $log_{10}$ decrement in the HBV DNA titer. Long-term follow up is needed to determine the therapeutic efficacy of entecavir for lamivudine-resistant CHB in children and adolescents.
Keywords
Entecavir; Adefovir; Lamivudine; Chronic hepatitis B; Resistance;
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