Combination of Lamivudine and Adefovir Dipivoxil for Treatment of Chronic Hepatitis B
Sponsor study identifier
Secondary identifiers
OTHER · NIHCC
interventional
41
1 country
1
Study Start
August 2001
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
April 2010
Actual (reported)Study Completion
August 2013
Actual (reported)This study will evaluate the safety and effectiveness of lamivudine plus adefovir versus adefovir alone to treat chronic hepatitis B infection. The Food and Drug Administration has approved lamivudine for the treatment of hepatitis B. However, the drug is not effective in all patients, and many of those in whom it initially works develop resistance after 1 to 3 years. Adefovir is an experimental drug that inhibits replication of the hepatitis B virus (HBV). Adefovir used alone may be adequate to provide sustained suppression of the virus and improvement in liver disease. However combining two anti-viral agents may be superior to using one alone, similar to the strategy employed for the treatment of AIDS. This study will test whether the combination of lamivudine and adefovir is better than adefovir alone for the treatment of chronic hepatitis B. Patients 18 years of age and older, who have been infected with HBV for at least 6 months, may be eligible for this study. Candidates may not have received lamivudine treatment in the past 6 months or prior treatment with adefovir and must not be taking other anti-viral treatments for their hepatitis. They will have a blood test to confirm HBV infection. Participants will be admitted to the NIH Clinical Center for 2 to 3 days for a medical evaluation. One to 2 weeks after the evaluation, patients will be randomized to begin taking lamivudine and adefovir, or adefovir alone. Therapy will continue for at least 12 months. Follow-up clinic visits will be scheduled weekly for the first month, then every 4 to 8 weeks for the rest of the treatment period. Patients will be evaluated at the end of 1 year. Patients who have not improved with treatment will stop taking the treatment and will be evaluated in the clinic once every 4 weeks for another 6 months. Patients who show an improvement in their liver injury may continue taking lamivudine and adefovir or adefovir alone for 4 more years, as long as they continue to improve with the medication. Progress will be evaluated. If the test results show no continued improvement or are negative for hepatitis B antigens, therapy will be stopped. Patients who continue treatment for 5 years will be readmitted at year 4 for another medical evaluation to assess the effects of treatment at that time. After the 5 years all patients will stop therapy at and be followed with regular clinic visits for at least 6 months.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
August 2013
Actual (reported)Click on a node to explore related trials.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
August 2001
Date type not reportedThis date has not been verified as actual or estimated.
September 3, 2001
Actual (reported)September 3, 2001
Actual (reported)April 2010
Actual (reported)April 4, 2013
Actual (reported)August 2013
Actual (reported)Maintained Combined Response (Virological, Biochemical and Histological Response).
A maintained combined response was defined as a combination of a virological, biochemical and histological responses at weeks 48 and 192. A virological response was defined as a decrease in HBV DNA levels to undetectable by the Amplicor assay (\<500 copies/mL). A biochemical response was defined as a decrease in serum ALT levels into the normal range (\<41 U/L). A histological response was defined as a decrease in the HAI score by at least three points with no worsening of the Ishak fibrosis score.
196 weeks from randomization
HBeAg Loss at Week 196
Week 196 from randomization
Virological Response
These entries preserve how the registry describes the intervention. Their treatment roles are shown separately from molecular identities.
Grouped treatment entry
Lamivudine and adefovir
The registry names several treatments. This does not confirm that participants received them together or that they form a single product.
View registry recordNational Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda, Maryland, 20892, United States
Niederau C, Heintges T, Lange S, Goldmann G, Niederau CM, Mohr L, Haussinger D. Long-term follow-up of HBeAg-positive patients treated with interferon alfa for chronic hepatitis B. N Engl J Med. 1996 May 30;334(22):1422-7. doi: 10.1056/NEJM199605303342202.
Malik AH, Lee WM. Chronic hepatitis B virus infection: treatment strategies for the next millennium. Ann Intern Med. 2000 May 2;132(9):723-31. doi: 10.7326/0003-4819-132-9-200005020-00007.
Ghany Mark, MD
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
41 participants (actual enrollment reported by the registry).
First Submitted
September 3, 2001
First Posted
September 3, 2001
Study Start
August 2001
Date type not reportedThis date has not been verified as actual or estimated.
Week 196 from randomization
Biological Response
week 196 from randomization
Histological Response
week 196 from randomization
Linked from the registry description. Each source intervention is retained as reported.
In: Lamivudine and adefovir
In: Lamivudine and adefovir
Contact the study team to confirm eligibility.
Hoofnagle JH, di Bisceglie AM. The treatment of chronic viral hepatitis. N Engl J Med. 1997 Jan 30;336(5):347-56. doi: 10.1056/NEJM199701303360507. No abstract available.
Ghany MG, Feld JJ, Zhao X, Heller T, Doo E, Rotman Y, Nagabhyru P, Koh C, Kleiner DE, Wright EC, Liang TJ, Hoofnagle JH. Randomised clinical trial: the benefit of combination therapy with adefovir and lamivudine for chronic hepatitis B. Aliment Pharmacol Ther. 2012 May;35(9):1027-35. doi: 10.1111/j.1365-2036.2012.05059.x. Epub 2012 Mar 26.
Primary Completion
April 2010
Actual (reported)Study Completion
August 2013
Actual (reported)Last Updated
September 23, 2016
Results First Posted
April 4, 2013
Record last verified: 2014-07
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Source: ClinicalTrials.gov.
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