View clinical trials related to Hepatitis B.
Filter by:The purpose of this study is to offer subjects from centers in Taiwan who successfully complete 168 weeks of treatment in study GS US 174-0108 access to treatment with tenofovir DF for up to three additional years (144 weeks). Subjects will be followed per local standard of care. Serious adverse events (SAEs), drug accountability and patient disposition will be recorded.
This study will evaluate the persistence of immunity to hepatitis B in healthy children aged 7 to 8 years, after previous vaccination with Infanrix hexa™ in the first two years of life, and also their ability to mount an immune response to the challenge dose of Engerix-B™ Kinder.
An open label, multi-centre, non-interventional post-marketing surveillance to monitor the safety and/or efficacy of adefovir dipivoxil administered in Korean CHB patients according to the prescribing information
To describe liver enzyme elevations in patients who are coinfected with HIV and either Hepatitis C (HCV) and/or Hepatitis B (HBV) receiving maraviroc or placebo in combination with their current suppressive anti-HIV drug therapy.
The purpose is to evaluate efficacy and safety of therapeutic hepatitis B virus (HBV) vaccine (mimogen-based)) Joint entecavir treatment in chronic hepatitis B patients.
The primary aim of this study is to asses the efficacy (both virological and clinical) and safety of ETV in both NA-naïve and NA-experienced chronic hepatitis B patients, and to explore baseline factors associated with virologic reponse (VR) to ETV.
Withdrawal of antiviral therapy can result in hepatic or alanine aminotransferase (ALT) flares as Hepatitis B Virus (HBV) replication resumes; however, in some participants, a flare exacerbates chronic hepatitis temporarily but can also result in viral clearance. Hepatic flares are common after stopping anti-HBV therapy. Only participants who already are on treatment with tenofovir disoproxil fumarate (TDF) monotherapy or TDF in combination with lamivudine or emtricitabine for at least 4 years and who achieved and maintained virologic suppression (< 400 copies/mL) for 3.5 or more years will be included in this study. One treatment arm will stop the TDF therapy while the other treatment arm will continue the TDF therapy. Participants in the Stop TDF arm will be monitored very closely with special focus on biochemical flares (especially ALT increases) and virological relapses (Hepatitis B viral load increases). If any participant in the Stop TDF arm exceeds one or more predefined limits for such flares or relapses, TDF will be reinstituted. The study will assess Hepatitis B surface antigen (HBsAg) loss (i.e. specific Hepatitis B virus components are no longer detectable) and seroconversion (occurrence of Hepatitis B surface antibody, a specific antibody which usually occurs after HBsAg loss) rates during study duration. The percentage of participants who need to restart TDF therapy in the Stop TDF arm will also be evaluated.
The relevance of this research to public health is to make it possible to test for hepatitis C and syphilis at point of care so that people will receive their results immediately instead of requiring people to wait for at least a week to get their test results. This research will make rapid tests for HIV available that can detect HIV infection earlier and are more accurate than current tests available in the United States.
In order to clarify the association between HBV mutations appearing before and during interferon therapy and the therapeutic effects, serial serum samples from 100 HBeAg-positive CHB patients undergoing peginterferon alfa-2a therapy will be collected and analyzed for the mutations of preS/S gene and BCP-preC/C region, particularly for the deletion mutations. Furthermore, Real-Time PCR will be performed to measure the ratios of wild-type HBV and deletion mutant HBV before and at the end of peginterferon alfa-2a therapy. Finally, statistical analysis will be done to elucidate whether the mutations of preS/S gene and BCP-preC/C region have any relation with the therapeutic effect of peginterferon alfa-2a.
This study is a retrospective analysis to identify factors influencing hepatitis B virus reactivation in patients treated with rituximab containing chemotherapy. Rituximab monoclonal antibody targeting CD20 induces B-cell depletion resulting in prolonged immune suppression. This leads to frequent reactivation of patients with a previous history of exposure to HBV or HBV carrier. We collect the clinical features and laboratory findings of patients satisfied the inclusion criteria as follows. 1. Patients diagnosed with diffuse large B-cell lymphoma (DLBCL) or \ follicular B-cell lymphoma (FL). 2. Patients who had received at least two cycles of rituximab-CHOP or rituximab-CVP as a primary treatment 3. Patients with a history of previous exposure to HBV - HBV surface antigen (HBs Ag) positive Or - HBV core antibody (IgG anti-HBc antibody) positive Then, we compare the HBV reactivation group with the control group (HBV reactivation does not happen) to find factors influencing HBV reactivation.