A phase II dose-escalating trial of clevudine in patients with chronic hepatitis B

Hepatology : Official Journal of the American Association for the Study of Liver Diseases
Patrick MarcellinHyo-Suk Lee

Abstract

Current therapies available for the treatment of chronic hepatitis B are limited in their ability to result in a cure. Clevudine is a new pyrimidine analog with potent anti-hepatitis B virus (HBV) activity in vitro. A multicenter dose-escalation study evaluated clevudine at 10, 50, 100, and 200 mg once daily for 28 days. Eligible patients had HBV DNA levels of 3 x 10(6) copies/mL or more, had not undergone nucleoside treatment, and were without human immunodeficiency or hepatitis C virus coinfection. Thirty-two patients were enrolled (5, 10, 10, and 7 patients in the 10-, 50-, 100-, and 200-mg dose groups, respectively), 81% were male, 81% Asian, and 88% were hepatitis Be antigen (HBeAg) positive at baseline. Median pretreatment serum HBV DNA levels ranged from 7.3 to 8.8 log(10) copies/mL. After 28 days, the median HBV DNA log(10) change from baseline was -2.5, -2.7, -3.0, and -2.6 log(10). Six months after dosing, median changes from baseline were -1.2, -1.4, -2.7 and -1.7 log(10) in the 10-, 50-, 100-, and 200-mg cohorts, respectively. Six of 27 patients lost HBeAg, and 3 of 27 patients seroconverted to HBe antibody. Clevudine was well tolerated, with no dose-limiting toxicities. A transient increase in alanine aminotransfer...Continue Reading

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