View clinical trials related to Hepatitis A.
Filter by:This is a non-randomized, open-label study examining the safety and efficacy of betaine in addition to standard anti-viral therapy in genotype 1 hepatitis C non-responders or relapsers to previous pegylated interferon plus ribavirin. Betaine (20 gm/day) in 2 divided doses will be added to Peginterferon alpha 2a (180 mcg) plus weight-based Ribavirin (1000 or 1200 mg/day, for body weight < or > 75 kg, respectively, for 48 weeks. Patients must be diagnosed with chronic hepatitis C, genotype I, and have undergone therapy for hepatitis C with pegylated interferon plus ribavirin. Subjects will be followed for safety, tolerability, hepatitis C viral response and the effect on interferon gene signaling in peripheral blood mononuclear cells during therapy.
The purpose of this study is to determine whether obese people do not respond to hepatitis C treatment as well as lean people. This research studies whether obese people will show higher sustained virologic response rate if they lose weight by Orlistat use and dietary and lifestyle modification.
The purpose of the study is to look at cells of the immune system to see if the cells are different among people with different risk factors that have received a liver transplant. We will enroll 50 patients receiving liver transplant and their donors. Both donor and recipient must participate in the order for the recipient to participate in the study. We will take blood samples from these patients and their donors.
This is a Phase 4, retrospective and observational, multicenter, national (Brazil), open, noncomparative, and nonrandomized study, which does not have visits. This study will be conducted in accordance to Good Clinical Practices. The procedure will be the review of medical records of patients who have already completed 12 weeks of treatment of chronic hepatitis C with peginterferon alfa-2b and ribavirin. This review will take place after the subjects have signed the informed consent form authorizing collection of these data. The collection of data for virological response after Week 12 will be collected prospectively through the review of medical records after the subjects have completed their entire treatment and follow-up period.
Chronic infection by the hepatitis C virus (HCV) is a common cause of liver disease, which may progress to cirrhosis and eventually liver cancer. The therapeutic indication will depend mainly on the importance of liver damage (fibrosis), which can be assessed by physical techniques, blood tests and a liver biopsy. The overall objectives of the project are to understand how HCV variability may influence the severity of steatosis (accumulation of fat in the liver), studying 30 patients chronically infected with HCV (half of these patients infected by HCV genotype 3, versus the other half infected by HCV of another genotype). A small portion of the biopsy performed for the routine pathology examination will be placed in special fixation buffer for electron microscopy (EM). Counting and measuring the size of lipid droplets present in the liver by EM will be used to precisely quantify and characterize the liver steatosis. A blood sample of patients will also be collected to sequence the viral genome present in the patient and identify the amino acids involved in an increase in intracellular accumulation of lipid droplets. This work should clarify the impact of the viral variability in the severity of steatosis. Ultimately, the identification of viral sequences responsible for an increase of this phenomenon could be crucial for understanding the mechanisms involved in the steatosis.
The rate of sustained virological response to a course of standard antiviral therapy (peg-interferon plus ribavirin) of patients with chronic hepatitis C infected by genotype 1 with advanced fibrosis (>F2) is rather low. Monotherapy with ribavirin reduces ALT levels and necroinflammatory liver activity in up to a half of non-responders to standard antiviral therapy, but without changes in liver fibrosis or viremia. Such a beneficial effect seems to be mainly due to the immunomodulatory effect of ribavirin. Portal pressure, as measured by HVPG, lowers in patients with chronic hepatitis C and advanced fibrosis with end-of-treatment response to peg-interferon plus ribavirin. Portal pressure reduction in this setting relates to a reduction of the necroinflammatory liver activity, but not with fibrosis amelioration. We hypothesize that monotherapy with ribavirin reduces portal pressure in hepatitis C patients with advanced fibrosis by means of its immunomodulatory and anti-inflammatory effects, and could constitute an alternative to non-responders to standard antiviral treatment. Portal pressure measurement has become a validated surrogate outcome measure in chronic liver disease, since decreasing portal pressure has shown consistent improvement in survival and clinical outcomes, such as complications of portal hypertension. The primary aim of this study is to investigate whether ribavirin monotherapy slows the progression of advanced chronic liver disease by hepatitis C as assessed by a reduction in HVPG.
For chronic HBV infection, an optimal pharmacological agent to promote recovery from chronic HBV infection would be one that inhibits HBV DNA polymerase, combined with the clearence from the liver of cccDNA to block HBV reactivation after the circulating viral burden has been eliminated by therapy. The activity of clevudine on cccDNA in combination with its potent antiviral activity on HBV polymerase makes it the optimal agent in combination with tenofovir for this protocol.
The objective of the study is to evaluate the superiority of treatment with PegIntron and Rebetol over no antiviral therapy (control group) in subjects with chronic hepatitis C and type C compensated cirrhosis. Subjects will be randomized in a ratio of 2:1 (Treatment Arm to Control Arm). Subjects in the Treatment Arm will receive combination therapy with PegIntron and Rebetol for 48 weeks; then will enter a 24-week post-treatment Follow-up. Subjects who have detectable Hepatitis C Virus-RNA at Treatment Week 24 will discontinue treatment and enter Follow-up.
The purpose of this study is to determine if hepatitis C virus and influenza virus vaccine components can cross the placenta and stimulate an immune response in the fetus.
The purpose of this study is to evaluate the safety, immunogenicity, and antiviral effects of multiple intravenous doses of ANZ-521 in patients with chronic Hepatitis C virus.