View clinical trials related to Hepatitis B.
Filter by:This study is to investigate the HBV DNA suppression (and HBeAg seroconversion among HBeAg positive patients) pegylated interferon treatment at 24 weeks after end of treatment among patients who have failed anti-viral treatment in the past.
Open-label studies, anecdotal reports, and in vitro scientific research indicate that 4-methylumbelliferone (active ingredient of the dietary supplement Heparvit®) may prevent and reverse the symptoms and complications of chronic infection with hepatitis B virus (HBV)and hepatitis C virus (HCV). This effect has been observed among naïve patients as well as those who are non-responders to interferon, commonly used as first-line therapy for HBV and HCV. In order to scientifically address the efficacy of this 4-methylumbelliferone on chronic viral hepatitis, a randomized, placebo-controlled, blinded study is needed. It is hypothesized that 4-methylumbelliferone may reduce the impact and aggressiveness of HBV and HCV upon the liver, thereby slowing the progression to potentially life threatening liver diseases such as cancer and cirrhosis. This is a preliminary study designed to determine any indications under controlled conditions that may warrant further detailed clinical studies.
During 1983-1990 in the Jiangsu province of China, 80,000 infants were randomised by area of birth between control, standard Hepatitis B vaccination (at 0, 1 and 6 months of age) and standard vaccination plus a booster dose at about 2 to 3 years of age. The aim is to prevent establishment of chronic HBV infection in early childhood, hence to prevent the morbidity of chronic hepatitis B in young adolescents and the incidence/mortality several decades later from liver cancer and other HBV related chronic liver diseases. Long-term follow-up through central registries will determine the impact of vaccination on liver cancer incidence and mortality.
The efficacy of pegylated interferons in the treatment of chronic hepatitis B has shown superior results to standard of care in patients only infected with hepatitis B. The efficacy of pegylated interferon for the treatment of chronic hepatitis B in HIV-coinfected patients is not known at present. The purpose of this study is to evaluate the efficacy of pegylated interferon in the treatment of chronic hepatitis B in HIV-infected individuals. Apart from evaluating the efficacy of pegylated interferon therapy in this setting as such, i.e. in patients without present or future need of highly active antiretroviral therapy (HAART) for HIV-infection, there is a second purpose of this study, to investigate whether combination treatment of HBV-infection may be superior to pegylated interferon therapy alone. Therefore patients without need of HAART are offered pegylated interferon alfa-2a over 48 weeks. Patients who require HAART are offered emtricitabine / tenofovir DF containing HAART over 72 weeks PLUS pegylated interferon alfa-2a over 48 weeks vs. emtricitabine / tenofovir DF containing HAART over 72 weeks WITHOUT pegylated interferon-alfa-2a.
The primary purpose of this study is to determine the ability of the Protector Cap Jet Injector to prevent cross-contamination in the next injection sample. The hypothesis is that the Protector Cap Jet Injector will prevent contamination in the next injection sample, even following injection of volunteers with high levels of hepatitis B virus.
* AIMS OF THE STUDY (STUDY OBJECTIVES) 1. To test the effect of daily lamivudine (100 mg) in reducing the risk of HBV reactivation and hepatitis development in HBsAg (+) NHL patients. 2. To test the efficacy of daily lamivudine in preventing and treating hepatitis B reactivation and in circumventing hepatic failure and death. 3. To test whether lamivudine can improve the overall outcome of NHL patients who are HBV carriers. (Study end-points: The major end-point: hepatitis B reactivation in NHL patients---defined by higher than 10-fold increase of serum HBV DNA level and/or reappearance of HBeAg in the serum during and within 6 months after chemotherapy. The minor end-point I : events of hepatic failure and death---defined by jaundice with hepatic encephalopathy. The minor end-point II: the response rate and survival rate in HBsAg-positive NHL patients receiving lamivudine prophylaxis and treatment.)
Serum HBV DNA is a referent but insufficient marker of therapeutic follow-up in chronic hepatitis B treatment. Intra hepatic cccDNA disappearance reflects HBV eradication in the liver. Intra lymphocyte cccDNA could be a new marker of HBV eradication after treatment. The major interest of this marker is that it can be measured by a simple blood test instead of a liver biopsy.
The primary purpose of this study is to demonstrate the lot-to-lot consistency of 3 production lots of GSK Biologicals' Hib-MenAC (Haemophilus influenzae type b and meningococcal serogroups A and C) vaccine when reconstituted with Tritanrix™-HepB (diphtheria, tetanus, pertussis, and hepatitis B) vaccine and administered as a single injection.
To evaluate the persistence of anti-hepatitis A virus (HAV) and anti-hepatitis B surface antigen (HBs) antibodies up to 2, 3, 4 and 5 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.
To evaluate the persistence of immune response 5 years and 6 years after the first vaccine dose.