View clinical trials related to Hepatitis A.
Filter by:The primary purpose of this study is to determine whether the preventive hepatitis E are effective in the prevention of hepatitis E occurring at least 30 days after the administration of the third dose of vaccine. The secondary purpose of this study is to to evaluate the safety and immunogenicity and immunopersistence of the study vaccine. The initial study is planed to be ended on month 19 and the results were analysed and used for registration purpose. The extended study will be continued to assess the long-term efficacy, immunogenicity and safety.
The purpose of this study is to determine whether BMS-650032 and BMS-790052 in combination alone, together with Ribavirin, or together with Interferon and Ribavirin are effective in the treatment of Hepatitis C in patients who have not responded to prior therapy.
This observational, non-interventional cohort study will evaluate predictors of response in patients with chronic hepatitis B receiving standard of care Pegasys therapy. Efficacy and safety parameters will also be evaluated. Patients included in the study will be followed for the duration of their treatment and for up to 3 years thereafter.
This study will evaluate the persistence of the immune response to HAV (Hepatitis A Virus) antigens and HBs (Hepatitis B surface) antigens in healthy adults previously vaccinated with GlaxoSmithKline (GSK) Biologicals' Twinrix Adult. The subjects will be invited for blood sampling 16, 17, 18, 19 and 20 years after vaccination to evaluate the antibody persistence. For subjects in whom low circulating antibodies are detected, the presence of immune memory against hepatitis A & B antigens will be investigated by the administration of a challenge dose of the appropriate vaccine (Havrix and/or Engerix-B) at the next planned visit. No new subjects will be recruited during this study.
This multiple dose study will assess the safety, tolerability, pharmacokinetics and pharmacodynamics of grazoprevir (MK-5172) in Genotype (GT) 1 and GT3 Hepatitis C virus (HCV)- infected participants. The primary hypothesis is that administration of grazoprevir for 7 days is sufficiently safe and well tolerated in HCV-infected males.
Main objective: To study and validate a questionnaire measuring treatment adherence in patients with Hepatitis C virus (HCV) infection. Design of the study: Multicentric, prospective, epidemiological study in the field of usual clinical practice.
The purpose of this study is to evaluate effectiveness, safety and pharmacokinetics (Explores what the body does to the medication) of TMC435350 in combination with Peginterferon Alfa-2a and Ribavirin in genotype 1 hepatitis C virus infected Japanese participants who have never received treatment for their hepatitis C infection.
The purpose of this study is to test the safety and tolerability of eltrombopag when used to increase and maintain platelet count. Platelet count to be maintained at a level sufficient to facilitate initiation of antiviral therapy, to minimize antiviral therapy dose reductions, and to avoid permanent discontinuation of antiviral therapy.
The investigators have shown robust in vitro anti-hepatitis B activity of simvastatin alone and synergistic activity with all four FDA-approved anti-hepatitis B oral drugs tested. The investigators propose phase 1 studies in 48 chronic hepatitis B human carriers who have never been treated before. Doses of drugs will remain at or below FDA-approved dosage levels for cholesterol lowering (simvastatin) or hepatitis B (tenofovir or entecavir). Arm 1 will have simvastatin monotherapy only. Arm 2 will combine simvastatin with tenofovir. Arm 3 will combine simvastatin with entecavir. For maximum safety, the 3 arms and the dose groups in each arm will be filled consecutively and not concurrently. The definition of efficacy for simvastatin alone will be a 1 log drop of hepatitis B virus in 14 days. Efficacy for combination of drugs will require a 2 log drop of hepatitis B virus in 14 days. Numerous safety tests and stop rules are noted in the protocol.
The results of antiviral therapy in patients with recurrent hepatitis C after liver transplantation are lower than standard. Ribavirin has immune-modulating effects and seems to be crucial to optimize viral treatment. The aim of this multicenter controlled study is to examine the effect of Ribavirin pre-treatment preceding the combination therapy with peginterferon plus ribavirin on the sustained virological response.