View clinical trials related to Hepatitis, Chronic.
Filter by:This is a Phase 2b, randomized, double-blind, parallel-group, placebo-controlled, multicenter study investigating the safety, tolerability and efficacy of two oral doses of GS-9450 in adults with chronic Hepatitis C Virus (HCV). Approximately 240 subjects 18-65 years of age who meet study entry criteria will be randomized (in other words, selected at random, like flipping a coin) to one of three treatment groups (80 subjects per treatment group) as follows:GS-9450 10 mg once daily,GS-9450 40 mg once daily, or matching placebo once daily. Following randomization, subjects will return within seven business days for a Baseline (Day 1) visit, at which time study medication will be dispensed and subjects will enter a 26 week treatment phase. During the treatment phase, subjects will receive study drug once daily for 24 weeks and then taper off of study drug over the following 2 weeks by receiving study drug once every other day for one week and then every 3 days for one week. Following completion of the treatment phase, subjects will enter a 4-week off-treatment follow-up phase.
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 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.
The purpose of this study is to determine the optimal antiviral treatment for lamivudine resistant hepatitis B patients.
The objective of the study is to assess the safety and efficacy of Intron A (3 Mio I.E./m2, 3 times per week) and Rebetol (15 mg/kg/day) in children aged 3 to 17, treated in common medical practice at 10 sites in Germany. The primary objective is to determine if there are any new severe adverse events observed with this recently approved dosing regimen. The study will also evaluate the rates of eradication of the HCV virus. This study was terminated due to low enrollment. At the time of termination, 3 participants had enrolled. Therefore, these 3 participants transferred into study P04538 (NCT00727077) and will be included in the P04538 (NCT00727077) data reporting.
Study P05063 is a 3-year long-term follow-up (LTFU) study in participants previously treated with boceprevir (BOC) or narlaprevir (NAR) in a Phase 1, 2, or 3 clinical study. Participants will be followed for up to 3.5 years after the end of their participation in the treatment protocol to document maintenance of the antiviral response (for sustained responders) and to characterize the long-term safety after use of this therapeutic regimen. LTFU procedures include collection of plasma samples for measuring Hepatitis C Virus ribonucleic acid (HCV-RNA) by polymerase chain reaction (PCR) and HCV sequence analysis. No drug therapy will be administered as part of this study.
In this study, adult Indonesian subjects with human immunodeficiency virus (HIV) coinfected with chronic hepatitis C (CHC) will be given peginterferon alfa-2b (PEG-IFN) plus ribavirin (RBV) combination therapy. The efficacy rate (sustained virologic response, end of treatment virologic response, and sustained biochemical response), the subject morbidity rate as caused by other opportunistic infection (eg, bacterial pneumonia, tuberculosis, and other bacterial infection), and the safety and tolerability of this combination therapy will be examined.