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A correction has been published: N Engl J Med 2003;348(12):1192.

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Volume 348:808-816 February 27, 2003 Number 9
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Adefovir Dipivoxil for the Treatment of Hepatitis B e Antigen–Positive Chronic Hepatitis B
Patrick Marcellin, M.D., Ting-Tsung Chang, M.D., Seng Gee Lim, M.D., Myron J. Tong, Ph.D., M.D., William Sievert, M.D., Mitchell L. Shiffman, M.D., Lennox Jeffers, M.D., Zachary Goodman, M.D., Ph.D., Michael S. Wulfsohn, M.D., Ph.D., Shelly Xiong, Ph.D., John Fry, B.Sc., Carol L. Brosgart, M.D., for the Adefovir Dipivoxil 437 Study Group

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ABSTRACT

Background In preclinical and phase 2 studies, adefovir dipivoxil demonstrated potent activity against hepatitis B virus (HBV), including lamivudine-resistant strains.

Methods We randomly assigned 515 patients with chronic hepatitis B who were positive for hepatitis B e antigen (HBeAg) to receive 10 mg of adefovir dipivoxil (172 patients), 30 mg of adefovir dipivoxil (173), or placebo (170) daily for 48 weeks. The primary end point was histologic improvement in the 10-mg group as compared with the placebo group.

Results After 48 weeks of treatment, significantly more patients who received 10 mg or 30 mg of adefovir dipivoxil per day than who received placebo had histologic improvement (53 percent [P<0.001], 59 percent [P<0.001], and 25 percent, respectively), a reduction in serum HBV DNA levels (by a median of 3.52 [P<0.001], 4.76 [P<0.001], and 0.55 log copies per milliliter, respectively), undetectable levels (fewer than 400 copies per milliliter) of serum HBV DNA (21 percent [P<0.001], 39 percent [P<0.001], and 0 percent, respectively), normalization of alanine aminotransferase levels (48 percent [P<0.001], 55 percent [P<0.001], and 16 percent, respectively), and HBeAg seroconversion (12 percent [P=0.049], 14 percent [P=0.01], and 6 percent, respectively). No adefovir-associated resistance mutations were identified in the HBV DNA polymerase gene. The safety profile of the 10-mg dose of adefovir dipivoxil was similar to that of placebo; however, there was a higher frequency of adverse events and renal laboratory abnormalities in the group given 30 mg of adefovir dipivoxil per day.

Conclusions In patients with HBeAg-positive chronic hepatitis B, 48 weeks of 10 mg or 30 mg of adefovir dipivoxil per day resulted in histologic liver improvement, reduced serum HBV DNA and alanine aminotransferase levels, and increased the rates of HBeAg seroconversion. The 10-mg dose has a favorable risk–benefit profile for long-term treatment. No adefovir-associated resistance mutations were identified in the HBV DNA polymerase gene.


Source Information

From the Service d'Hépatologie, INSERM Unité 481, and Centre de Recherches Claude Bernard sur les Hépatites Virales, Hôpital Beaujon, Clichy, France (P.M.); the Department of Internal Medicine, National Cheng Kung University Hospital, Tainan, Taiwan (T.-T.C.); the Division of Gastroenterology, National University Hospital, Singapore (S.G.L.); the Liver Center, Huntington Medical Research Institutes, Pasadena, Calif. (M.J.T.); the Department of Medicine, Monash University and Monash Medical Centre, Melbourne, Australia (W.S.); the Division of Gastroenterology, Virginia Commonwealth University Health System, Richmond (M.L.S.); the Center for Liver Diseases, University of Miami School of Medicine, and the Miami Veterans Affairs Medical Center, Miami (L.J.); the Armed Forces Institute of Pathology, Washington, D.C. (Z.G.); and Gilead Sciences, Foster City, Calif. (M.S.W., S.X., J.F., C.L.B.).

Address reprint requests to Dr. Marcellin at the Service d'Hépatologie, INSERM Unité 481, and Centre de Recherches Claude Bernard sur les Hépatites Virales, Hôpital Beaujon, 100 Blvd. du Général Leclerc, 92110 Clichy, France, or at marcellin{at}bichat.inserm.fr.

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Related Letters:

Adefovir Dipivoxil for Hepatitis B e Antigen–Positive Chronic Hepatitis B
Mukherjee S., Marcellin P., the Adefovir Dipivoxil 437 Study Group
Extract | Full Text | PDF  
N Engl J Med 2003; 348:2468, Jun 12, 2003. Correspondence

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