View clinical trials related to Hepatitis C, Chronic.
Filter by:The purpose of this study is to demonstrate the relative bioavailability of Ribavirin 200 capsules and Rebetol 200 mg capsules in females under non-fasting conditions.
Background: According to recent estimates, the prevalence of Chronic Hepatitis C (CHC) in Canada is three times more common in First Nations (FN)and Metis compared to non-FN populations. Moreover, once infected, the progression of CHC to cirrhosis and/or hepatocellular carcinoma is greater in FN patients due to the increased prevalence of alcohol abuse, obesity and diabetes in this segment of the population. Research Plan: This research proposal consists of three parts. The objective of Part I is to document the response to anti-viral treatment for CHC among treatment-naïve FN and Metis and Caucasian (hereafter referred to as non-FN) patients residing in three urban Western Canadian centres (Winnipeg, Saskatoon and Regina). Demographic, clinical and response to treatment data in a total of 160 patients (80/group) will be collected at the above centres and transferred to the Section of Hepatology at the University of Manitoba for statistical analyses. In Part II, the applicants will document and compare the immune responses to HCV proteins throughout the course of therapy in FN, Metis and non-FN patients. In the final part, direct economic costs of CHC care in FN, Metis and non-FN patients will be ascertained and future costs predicted. Hypotheses: Part I - The rate of sustained virologic response (SVR) to treatment for CHC is higher in FN and Metis compared to non-FN and no Metis patients. Part II - The immune response to HCV proteins during anti-viral therapy for CHC is enhanced in FN and Metis compared to non-FN and non-Metis patients. Part III - The direct costs of health care utilization and delivery for CHC are similar among FN and Metis and non-FN and non- Metis patients.
This is an exploratory trial of Bovine Colostrum powder to decrease translocation of gut-derived microbial products and immune activation in HCV infection. The study is designed as a single-arm, open-label, before-and after exploratory trial of 10 weeks of Bovine Colostrum Powder (BCP) to reduce translocation of intestinal microbial products and immune activation in patients suffering from chronic hepatitis C virus (HCV) infection. The study population will include HCV-infected (genotype 1) men and women, ≥ 18 years of age, not receiving anti-viral therapy at the time of enrollment and for at least the previous 3 months. Having failed previous anti-viral therapy (non responders), HCV recurrence after 72 weeks of therapy, developed side effects which mandated stopping anti viral therapy, or not considered eligible for initiation of such treatment, with a plasma HCV RNA level ≥ 1000 I.U.
This study will evaluate the hepatic (liver) and plasma pharmacokinetics of Vaniprevir (MK-7009) by evaluation of ribonucleic acid (RNA) of the hepatitis C virus (HCV) in genotype 1, HCV-infected participants.
The purpose of this 12-week study was to assess in subjects with chronic hepatitis C (treatment-naïve, genotype 1) receiving weight-based doses of ribavirin the early virologic response to the 480 ug dose level of Locteron™, dosed every 2 weeks, in comparison with 1.5 ug/kg PEG-Intron™ dosed weekly.
One single study has suggested that bone mineral density (BMD) is reduced in patients with non-cirrhotic chronic viral hepatitis C. Antiviral combination therapy with standard interferon and ribavirin may further decrease BMD. The aim of this study is to systematically investigate the effect of chronic hepatitis C genotype 1 infection alone and current standard therapy with peginterferon alfa-2a/ribavirin on BMD and bone metabolism.
Treatment of patients with chronic hepatitis C infected with genotype 1 hepatitis C virus (HCV) consists of combined peginterferon/ribavirin for 48 weeks. Approximately 50% of patients experience sustained virological response which equals cure. All other patients either do not respond or experience recurrence of HCV virus and chronic hepatitis. Important predictors of successful treatment are sustained dosing of both peginterferon and ribavirin. With regard to the latter, clinical evidence indicates that higher ribavirin doses may in fact even improve treatment outcome. However, high ribavirin doses cause hemolytic anemia which require dose reductions. Recent clinical experience show that erythropoetic growth factors, including erythropoetin, can counteract hemolytic anemia caused by antiviral treatment in chronic hepatitis C patients. Therefore, the current trial aims to test whether higher ribavirin doses adapted to a target plasma concentrations instead of a weight-based dosing result in better healing rates, and whether ribavirin-associated hemolytic anemia can be compensated by concommitant erythropoetin treatment. Using a randomized, controlled, open-label design, the investigators hypothesize that patients with high ribavirin doses adapted to plasma levels experience better viral clearance than patients treated with standard weight-based ribavirin doses. In addition, the investigators hypothesize that erythropoetin treatment will counteract hemolytic anemia induced by ribavirin thereby allowing maintenance of target plasma concentrations without ribavirin dose reductions.
This study will provide vaniprevir 600 mg or 300 mg twice daily in combination with pegylated interferon (peg-IFN) and ribavirin (RBV) to participants with chronic hepatitis C virus (HCV) infection who did not achieve viral eradication while participating in a prior vaniprevir clinical trial (MK-7009-004, NCT00518622; MK-7009-007, NCT00704405; MK-7009-009, NCT00704184; and MK-7009-029, NCT00954993).
This 2 arm open-label study will assess the safety and tolerability of combination treatment with Peginterferon alfa (Pegasys) and Ribavirin (Copegus) in patients with chronic hepatitis C. Patients will be assigned to receive Peginterferon alfa (Pegasys) 180 mcg sc once a week and Ribavirin (Copegus) 800 - 1200 mg po daily for either 24 or 48 weeks. Allocation to the treatment arms is to the discretion of the investigator (mainly according to genotype). Adverse events will be monitored throughout the study and hematologic parameters every 2 weeks and twice during the 24-week follow-up.
Hepatitis C is the most common reason for liver transplantation in the United States and affects nearly 4 million Americans. Treatments for hepatitis C are available but are poorly tolerated and are not always effective. Morbidity and mortality from hepatitis C are related to the development and progression of hepatic fibrosis to cirrhosis and end stage liver disease. Efforts to block progression of liver disease would thus result in prevention of morbidity and mortality as well as costs incurred by the health system in the care of these conditions. Scar tissue in the liver is secreted by a type of cell, called the stellate cell, in an activated state. This cell carries a receptor for angiotensin, a hormone, when activated. If this receptor is blocked, the cell becomes inactive and does not participate in scar tissue formation. Thus, we hypothesize that using a drug such as candesartan, which blocks angiotensin receptors, should result in less scar tissue formation in the livers of patients with hepatitis C.