
Study of Hepatitis C Virus (HCV) Viral Kinetics in HIV/HCV and HCV Patients
Hepatitis CThe purpose of this study is to evaluate what happens to hepatitis C virus in response to treatment with pegylated interferon and ribavirin in patients with HCV compared to those with HIV and HCV. This research is being done to help us identify how the composition of HCV changes with interferon in different populations. We will examine how quickly HCV is cleared from your body and what factors may influence that clearance. This information may help us find better treatments for HCV.

Efficacy of PegIntron (Peginterferon Alfa-2b) and Rebetol (Ribavirin) in Treatment-naïve Subjects...
Hepatitis CChronic1 moreThe objective of the study is to evaluate the rates of Hepatitis C virus (HCV) eradication and relapse in participants treated with PegIntron and Rebetol in clinical practice in Greece. Participants will not be treated as part of the study. Data on participants treated in accordance with approved labeling will be collected retrospectively from approximately 30 sites in Greece.

Safety and Efficacy of PegIntron and Rebetol Combination Therapy in Patients With Chronic Hepatitis...
Hepatitis CChronic1 moreThis is a post-marketing surveillance of patients with chronic hepatitis C treated with PegIntron and Rebetol combination therapy in clinical practice in Japan. The objective of the study is to evaluate the safety and efficacy of the combination therapy. The study will also compare the safety profile of the combination therapy among elderly patients and younger patients. Post-marketing surveys are not considered applicable clinical trials and thus the results of this survey will not be posted at its conclusion. The results will be submitted to public health officials as required by applicable national and international laws.

Nutritional Support During Antiviral Therapy for Hepatitis C
Hepatitis CWeight LossStandard antiviral treatment consists of weekly injections with Peginterferon-α in combination with ribavirin. This treatment may lead to significant weight loss (7% within 24 weeks on average), with decreased quality of life. In this study the investigators will examine in 50 patients whether nutritional advise and support can prevent weight loss during antiviral therapy.

Immune Response to Hepatitis C Virus
Hepatitis CThis study will identify and characterize immune factors involved in hepatitis C infection and elimination of the virus. Individual responses to hepatitis C infection vary; some people are able to eliminate the virus, whereas others remain chronically infected. This study may identify factors important in preventing infection that may be of help in developing a vaccine or more effective treatments. People over 18 years old who have been exposed to hepatitis C virus may participate in this study. Subjects will be recruited from the National Institutes of Health, Inova Fairfax Hospital, Occupational Medical Services-IDP P.C., Washington Hospital Center and Holy Cross Hospital, all in the Washington, D.C. metropolitan area. Individual patients from other centers will also be recruited on a case by case basis. Participants will have 40 to 60 cc (1 to 2 ounces) of blood drawn at seven intervals. The first collection will be as soon as possible after exposure to hepatitis C virus and then again at 2, 4, 6, 12, 24, and 48 weeks after exposure. The white blood cells will be studied for their response to the virus, and markers for infection will be followed. If infection develops, additional samples of blood may be requested, and patients will be offered evaluation for treatment. Test results will be kept confidential and will not be entered into any medical records.

History of Hepatitis C in Volunteer Blood Donors
Hepatitis CHepatitis C is a disease of the liver caused by the Hepatitis C Virus (HCV). Patients with hepatitis C may feel well and show no signs or symptoms of being ill. However, researchers would like to study the long-term effects of this disease. Volunteer blood donors diagnosed with chronic hepatitis C viral (HCV) and various levels of liver enzyme activity will be offered a complete medical evaluation and liver biopsy. The tests will enable researchers to provide the patients with an idea of how severe their liver disease is. The virus and patient will be studied in order to understand why patients with hepatitis C develop different levels of liver damage.

Self-testing for HCV Re-infection in MSM
Hepatitis C RecurrentHIV-1-infectionHIV+MSM (men who have sex with men) that have been cured of a hepatitis C viral infection (HCV) are at risk for HCV re-infection (5-10% per year). One intervention to reduce HCV incidence in this population may be to decrease the time to diagnosis of HCV re-infections in order to decrease the duration that these re-infected patients may transmit their HCV to sex partners. Diagnosis of HCV re-infection is followed by counseling on transmission risk in combination with prompt initiation of HCV therapy, which will prevent new HCV infections on the population level. In this study the investigators evaluate the effect and feasibility of more frequent and home-based testing for HCV on the time to diagnosis and treatment of HCV re-infections.

Paritaprevir/r - Ombitasvir, ± Dasabuvir, ± Ribavirin in Patients With Chronic Hepatitis C - An...
Chronic Hepatitis CThe study seeks to provide evidence of the effectiveness and obtain patient reported outcome (PRO) and work productivity data of the interferon-free ABBVIE REGIMEN (ombitasvir/paritaprevir/ritonavir +/- dasabuvir) +/- Ribavirin (RBV) in chronic hepatitis C virus (HCV) infected participants in Austria.

Effectiveness of Paritaprevir/r - Ombitasvir, ± Dasabuvir, ± Ribavirin in Patients With Chronic...
Chronic Hepatitis CThe interferon-free combination regimen of ombitasvir/paritaprevir/ritonavir/ with or without dasabuvir (ABBVIE REGIMEN) ± ribavirin (RBV) for the treatment of chronic hepatitis C (CHC) has been shown to be safe and effective in randomized controlled clinical trials with strict inclusion and exclusion criteria under well-controlled conditions. This observational study was the first effectiveness research examining the ABBVIE REGIMEN ± RBV, used according to local label, under real world conditions in Canada in a clinical practice patient population.

Evaluation of RIBAvirin Plasma COncentrations in Patients With Chronic Hepatitis C Infection Routinely...
HCV CoinfectionHepatitis CThe aim of this study is to evaluate RBV plasma concentrations when used in combination with newly developed DAA combinations. If possible, its correlations with SVR rates and incidence of anaemia will be assessed in HCV-patients.