View clinical trials related to Hepatitis A.
Filter by:Background: - Chronic hepatitis B virus infection is a leading cause of morbidity and mortality from end stage liver disease and liver cancer. Although significant progress has been made recently in hepatitis B therapy, current knowledge about how to manage the infection is limited because most treatment trials involve 1 to 2 years of therapy at most, even though most patients require treatment of much longer duration for optimal long-term outcome. To improve current knowledge on the disease and long-term disease progression, the Hepatitis B Research Network is collecting health and disease information from individuals who have been diagnosed with hepatitis B. Objectives: - To study individuals with hepatitis B and identify factors that affect the way the disease progresses. Eligibility: - Individuals at least 18 years of age who have been diagnosed with hepatitis B. Design: - Participants will be screened with a physical examination and medical history. Health information will be collected through questionnaires and surveys on health behaviors, and family history of liver disease. Participants will also provide blood samples, and those who have had a liver biopsy within the past 2 years or have one during the course of the study will provide biopsy material for further study. - Information will be collected during a series of study visits. Each visit will take approximately 1 hour. During the first year, participants will have study visits 12 weeks, 24 weeks, and 48 weeks after entering the study. In subsequent years, participants will have a study visit approximately every 24 weeks (6 months) until the end of the study. - Additional visits will be required of women who are pregnant when enrolled in the study or become pregnant during the course of the study. - Participants whose hepatitis B status changes during the course of the study (for example, a flare of disease activity) may be asked to return for more frequent visits.
The aim of the study is to investigate the epidemiology, natural history and treatment outcomes of acute hepatitis C (HCV) infection. Given the current pattern of case reporting, the cohort will be largely made up of human immunodeficiency virus (HIV)-positive patients, but HIV-negative patients with acute hepatitis C (AHC) will also be enrolled to enable comparisons to be made as appropriate and possible.
Study objectives: - Investigate the anti-HCV response in patients with Gaucher disease(GD) - Define the potential role of high levels of Glucocerebroside in the immune system Study hypothesis: High levels of Glucocerebroside can be used as a tool in the antiviral treatment of hepatitis C by potentiating the immune response of natural killer T cells and dendritic cells
No study has reported on the comparative effect of continuing lamivudine plus adefovir versus switching to telbivudine plus adefovir in HBeAg-positive lamivudine-refractory chronic hepatitis B patients who have suboptimal response to lamivudine plus adefovir. The goal of this study is to compare the efficacy of continuing lamivudine plus adefovir versus switching to telbivudine plus adefovir directly in patients with lamivudine-refractory chronic hepatitis B patients who have suboptimal response to lamivudine plus adefovir for at least 12 months.
The outcome of treatment of chronic hepatitis B is determined by viral and host interaction, thus the combination therapy of immunomodulator (PEG-IFN) and potent antiviral drug (entecavir) should improve the response rate. In addition, the simultaneous assessment of viral and host genetic factors associated with SVR may help to identify predictors of treatment outcomes, which will in turn significant reduce the cost/effect of therapy
Evaluate the safety and efficacy of Peginterferon alfa-2a following Entecavir compared with Peginterferon alfa-2a monotherapy in patient with HBeAg positive chronic hepatitis B. - Increased HBeAg seroconversion rate - Increased HBsAg loss rate - To define the best treatment condition for chronic HBV hepatitis patients
The purpose of this study is to study the role of the Immune System in causing arthritis in patients with Hepatitis C.
The aims of this three-year study are to explore symptom experience and its related factors for the patients with chronic hepatitis C Infection receiving interferon-α with ribavirin for 24 weeks and further to predict the relative risk of failure or occurence of severe side effects which interrupt the treatment.
To investigate the influence of hepatic steatosis on the anti-viral effect of entecavir in chronic hepatitis B patients.
The purpose of this study is to compare how safe, tolerable, and effective a novel drug, raltegravir, is to a commonly used combination, atazanavir/ritonavir, as initial treatment in HIV/Hepatitis C co-infected injecting drug users on a methadone program.