View clinical trials related to Hepatitis B.
Filter by:This study is performed to evaluate the persistence of anti-hepatitis B surface antigen (HBs) antibodies up to 16, 17, 18, 19 and 20 years after administration of the first dose of the study vaccine, Engerix-B™. No new subjects will be recruited in this long-term follow-up study. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.
To evaluate the persistence of anti-HBs antibodies up to 16, 17, 18, 19 and 20 years after administration of the first dose of the study vaccine. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007. No additional subjects will be recruited during this long-term follow-up study and no vaccine will be administered.
The purpose of this study is to evaluate the persistence of anti-hepatitis B surface antigen (anti-HBs) antibodies 16, 17, 18, 19 and 20 years after administration of the first dose of the study vaccine. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.
- Compare the safety of four oral doses of pradefovir after 48 weeks of treatment - Select the dose of pradefovir for Phase 3 studies
Compare the long-term safety of pradefovir to adefovir dipivoxyl
This project is a randomized, open-label trial of adefovir dipivoxil (Hepsera) and lamivudine combination therapy versus adefovir dipivoxil (Hepsera) monotherapy. Both adefovir dipivoxil and lamivudine are nucleoside analogues approved by the U.S. FDA for the treatment of chronic hepatitis B. The primary hypothesis is that subjects treated with combination therapy will see their viral DNA count decrease in an amount greater than subjects treated with monotherapy. The secondary hypothesis is that subjects treated with combination therapy will have a higher HBeAg conversion rate compared to historical controls of subjects treated with lamivudine or adefovir dipivoxil monotherapy.
In this study we compare the efficacy of two different HBV-vaccination schedules in HIV-infected persons concerning immune response and compliance. Short schedule: t=0,1,3 weeks and standard schedule: t=0,1,6 months.
This study will be conducted in two stages. In the diphtheria, tetanus, pertussis (DTP) booster phase, subjects will receive a booster dose of Tritanrix-HepB/Hib-MenAC or Tritanrix-HepB/Hiberix (active control) at 15 to 18 or 24 months in a single-blind manner so that the subjects' parents will not know which vaccine was administered to their child. In the Mencevax ACWY phase at 24-30 months, a dose of Mencevax ACWY will be given in an open manner to only those subjects who received less than 4 doses of Tritanrix-HepB/Hib-MenAC. No blood samples will be taken in this safety study.
The purpose of this study is to compare the use of HepeX-B versus HBIg, two anti-viral drugs, in patients who have received liver transplants due to liver failure caused by Hepatitis B infection. Patients will be evaluated over a 6 month to 1.5 year period to evaluate whether or not the drugs prevent the Hepatitis B virus from infecting the new liver.
The aim is to investigate the best treatment regime of PEG-Intron A and lamivudine combination in terms of viral clearance in chronic hepatitis B patients.