Active clinical trials for "Hepatitis C, Chronic"

The purpose of this study is to evaluate the efficacy and safety of low-dose interferon-alfa-2b plus ribavirin compared to the standard-dose of the same combination in patients with chronic hepatitis C.

The response rate to interferon-based anti-viral therapy for chronic hepatitis C is lower in patients who are obese. However, it is not clear whether this is related to suboptimal dosing of the medication or alterated response in obese patients. Alterated immune response had been reported in obese patients. The goal of current study is to determine the immune response to interferon in obese compared to non-obese chronic hepatitis C in an tissue culture system.

EVERYONES HCV is a retrospective review of all previous Hepatitis C (HCV) testing and diagnosis in NHS Tayside. The aim of this study is to analyse and compare the different Hepatitis C diagnostic pathways with a view to determining the most cost effective combination of methods of diagnosing HCV infection in a typical developed world population.

This study seeks to assess the effectiveness of Glecaprevir plus Pibrentasvir in participants with chronic hepatitis C in a real-life setting across clinical practice populations in the Russian Federation.

Chronic hepatitis C virus (HCV) infection, an important cause of morbidity and mortality worldwide, is a significant problem in kidney transplant recipients (KTRs) given its high prevalence in patients undergoing hemodialysis. Interferon based regimens were cornerstone of treatment of HCV infection in the past; however, due to their low efficacy and high rates of adverse effects, they have been abandoned in the new era of direct acting antivirals (DAAs). Several studies demonstrated the efficacy and safety of DAAs, yet data regarding clinical practice of these agents in KTRs is still needed. Therefore, we conducted a study using our registry data to evaluate the efficacy and safety of DAAs in KTRs.

The investigators will assess whether patients with the Hepatitis C virus (HCV) who are prescribed direct-acting antiviral (DAA) medications experience higher rates of adverse events than patients with HCV who are untreated. The investigators hypothesize that patients receiving DAAs do not experience higher rates of adverse events compared to patients who have not received DAAs. The study population is adults between the ages of 18 and 88 with any indication of a diagnosis of HCV. An intervention group (those receiving a DAA) and comparison group (those who are not treated) will be created using medication dispensing data. Eligibility for the study will be determined from January 1, 2011 through December 31, 2017. Covariates will be collected from January 1, 2011 through December 31, 2017. Individual study sites may have access to historical data prior to 2011 that can be used as covariates or to identify individuals with HCV. The primary outcomes of interest include acute myocardial infarction, neurological outcomes (e.g. acute stroke, intracranial bleed), acute kidney failure, acute on chronic liver failure, hepatic decompensation, multiple organ dysfunction syndrome, cancer, bradyarrhythmia, and death. The secondary outcomes include decompensated cirrhosis, hospitalization, emergency department visit, and arrhythmia. Outcomes will be assessed from January 1, 2011 through December 31, 2017. The investigators will use two different analytic approaches to answer the question of interest: a Poisson regression model and marginal structural modeling (MSM). The simpler Poisson model is an extension of tabular rate of event analysis. The more complicated MSM model incorporates modeling of the treatment decision to more flexibly control for confounding by indication. For each outcome, the investigators will only record the first date an outcome occurs. Each outcome will be modeled separately.

Chronic hepatitis C infection (CHC) is usually asymptomatic; nevertheless, there are studies that show that up to two thirds of patients may present some type of extrahepatic manifestation. The most frequent extrahepatic manifestation is type II mixed cryoglobulinemia (MCG-II) and clinically the most common presentation is leukocytoclastic vasculitis (LCV) with palpable purpura that affects the lower extremities. It is estimated that up to 80% of MCG-II cases are due to CHC. Also, previous studies have demonstrated that CHC prevalence is higher in patients with autoimmune diseases compared with general population. Therefore, if vasculitis is an extrahepatic manifestation of CHC, then the prevalence of CHC infection in this group of patients could be higher than the prevalence reported in general population. The aim of the study is to know the prevalence of CHC, determined by serological rapid test for hepatitis C screening, then all positive cases will be confirmed by quantitative viral load, in patients who consult primarily to a rheumatology department for "vasculitis" or other potential hepatitis C extrahepatic manifestations (rheumatological conditions).

The objective of this study is to assess the effectiveness of the glecaprevir/pibrentasvir (GLE/PIB) regimen in adolescent participants aged 12 to <18 years of age with chronic hepatitis C (CHC) in clinical practice in the Russian Federation. The study also plans to assess effectiveness of GLE/PIB in subpopulations of interest like co-infected hepatitis C virus (HCV)/human immunodeficiency virus (HIV) adolescents, in various HCV genotype/subgenotype, cirrhotic and non-cirrhotic participants, treatment-experienced (prior treatment with pegylated interferon (pegIFN) or IFN, and/or Ribavirin (RBV) and/or sofosbuvir [PRS]) and treatment-naïve, adolescents who use drugs (PWUD) and non-drug users.

This is a one-time cross-sectional survey study of approximately 200 self-identified black or African-American patients who have had chronic hepatitis C viral infection (HCV) that will evaluate patients' willingness to participate (WTP) in health/medical research related to HCV and attitudinal factors that might be associated with WTP, such as benefits and barriers to research participation, mistrust of physicians/researchers, health literacy, and knowledge of health/research studies.

Mixed cryoglobulinemia (MC) is common in patients with chronic hepatitis C virus (HCV) infection. Direct-acting antiviral (DAA) regimens are today very effective with sustained virological response rates (SVR12) above 90%. The objective of this study was to investigate the impact of DAA therapy on cryoglobulin clearance in patients with HCV-associated MC.