View clinical trials related to Hepatitis A.
Filter by:The aim of this study is to investigate the relationships between drug response and the host genetic factors, viral factors and clinical factors in chronic hepatitis C patients (HCV). And thus, the investigators are trying to develop the pharmacogenomic guideline in the Korean patients with HCV.
The purpose of this study is to study the effects of valacyclovir on patients who have hepatitis C and antibodies to herpes simplex type-2. Herpes simplex type 2 is a virus which causes genital herpes. Some persons with genital herpes have sores in their private areas but most persons do not have any symptoms at all. Valacyclovir is a medication which is commonly used to treat or prevent outbreaks of genital herpes. This medication is already approved by the Food and Drug Administration to treat genital herpes. Valacyclovir has not been approved to treat chronic hepatitis C. The study will take 16 weeks. Participants will be assigned to take either the study drug, valacyclovir, or a sugar pill that looks exactly like valacyclovir. The researchers and the persons participating will not know which medication they are receiving. Study visits will occur every two weeks and will take approximately 3-45 minutes. All study visits will occur at the G.V. Sonny Montgomery VA Medical Center.
Previous studies have shown that 5-10% of Hepatitis B Virus vaccine recipients produce none or to few antibodies after a standard immunization with 3 vaccines. These individuals are defined as non-responders. The investigators wish to investigate if mounting another kind of immune response, called the cellular immune (CMI) response, protects these non-responders. Aim/Hypothesis Primary aims: 1. To estimate the CMI response in serologic non-responders after receiving a standard course of HBV immunization Secondary aims: 2. To establish the prevalence of serological non-responders after a standard course of HBV vaccination. 3. To assess the safety of the vaccine. 4. Evaluate predictors of serologic non-response in young, healthy individuals receiving a standard course of HBV immunization 5. To compare the immunological profile before and after a standard HBV vaccination regimen on non-responders and responders 6. Establish a rapid test for measuring CMI after being HBV vaccinated. A total of 400 healthy volunteers receive a standard course of immunization with a combined hepatitis A and B vaccine (Twinrix®) at 0, 1, and 6 months. Blood is drawn at 0 and 8 months from all participants. The blood will be analysed to see if there is antibodies or/and if there is mounted a cellular immune response by measuring on parameters called cytokines.
The principal goal of this research project is to evaluate the natural history of HCV and liver disease and its treatment in HIV-infected persons who use drugs. Research procedures will focus on determining liver disease prevalence and severity within this population. This is an observational study without study specific interventions.
PPI-668 is an antiviral agent (a hepatitis C NS5A inhibitor) that is being developed as a potential treatment for hepatitis C virus infection. This study is being done to assess the safety and tolerance of PPI-668 when given to healthy volunteers for up to 5 days (Part I of the study) and to hepatitis C patients for up to 3 days (Part II). In addition, the study will assess how much PPI-668 is absorbed into the bloodstream. In Part II, the effect of PPI-668 on the amount of hepatitis C virus in patients' bloodstream (serum HCV RNA levels) also will be assessed.
The purpose of this study is to compare the sustained virologic response at post treatment Week 12 for each cohort (BMS-790052/Pegylated-interferon alfa 2a (pegIFNα-2a)/Ribavirin (RBV) versus placebo/PegIFNα-2a/RBV).
This prospective, multicenter, observational cohort study will evaluate the efficacy and safety of peginterferon alfa (e.g. Pegasys) plus ribavirin and treatment regimens containing direct-acting antivirals in patients with chronic hepatitis C who are treatment-naïve or treatment-experienced and HIV HCV co-infected. Data will be collected from patients receiving treatment according to current Summary of Product Characteristics and local labeling for the duration of their treatment and a 24-week follow-up.
This multi-center, open-label study will evaluate the efficacy and safety of Pegasys (peginterferon alfa-2a) and Copegus (ribavirin) in relation to IL28-b gene expression in treatment-naïve patients with chronic hepatitis C genotype 1. Patients will receive Pegasys (180 mcg sc weekly) and Copegus ( 1'000 or 1'200 mg orally daily) for 48 weeks. Anticipated time of study treatment is 48 weeks, follow-up is 24 weeks.
The purpose of this study is to determine if 48 weeks of therapy with Pegylated Interferon Lambda plus Ribavirin is effective and safe for a treatment of chronic hepatitis C (CHC) compared to therapy with Pegylated Interferon Alfa-2a plus Ribavirin.
Hepatitis A vaccine is the most frequently used traveler's vaccine, yet data on its ability to induce protective immunity in immunosuppressed travelers are scarce. The investigators assess the hepatitis A virus (HAV) antibody response in patients with rheumatoid arthritis (RA) treated with Tumor Necrosis Factor (TNF) - inhibitors and/or methotrexate (Mtx). In a previous study, 2 doses were not considered effective and there is therefore need for a study with an additional dose