Active clinical trials for "Hepatitis C"

The purpose of this study is to assess the effects of steady state DCV/ASV/BMS-791325 fixed dose combination (FDC) + 75mg BMS-791325 on the Pharmacokinetics (PK) of Methadone in subjects with the stable dose of Methadone and on the PK of Buprenorphine in subjects with the stable dose of Buprenorphine.

Rationale: Chronic HCV infection is characterised by a weak HCV specific CD8+ T cell response, due to continuous pressure of high viral load. Treatment of chronic HCV patients with ASV and DCV will result in a significant drop in HCV viral load. At present, no information is available on the immunological effects of treatment with ASV and DCV, nor on the early effects of viral load reduction caused by a compound that is thought not to possess direct immunomodulatory effects. This information will be crucial for a better understanding of the mechanisms that may limit the effectiveness of treatment, occurrence of viral rebound or relapses during, at the end of treatment or during the follow up period. Objective: To evaluate in detail the functionality of immune cells in blood in chronic HCV patients before, during and after treatment with ASV and DCV, in an IFN-free regimen. Study design: This is an investigator-initiated single center open label study with one arm of 12 patients. Study population: Adult chronic HCV patients with genotype 1b, who are previous non-responders to the treatment. Intervention (if applicable): All patients will be treated with twice daily a 200 mg oASV and once daily a 60 mg DCV for 24 weeks. Main study parameters/endpoints: Phenotype and function of blood leukocytes during treatment; frequency of HCV-specific T cells, NK cells and monocytes Gene expression levels of leukocyte populations before, during and after treatment Gene expression levels of the type I IFN signaling pathway on whole blood samples Serum cytokines levels using multiplex platforms

The purpose of the LEAP-C (learning, experiencing and preparing for hepatitis C treatment) study is to see if a brief (4-week) small group intervention will help people with HIV/HCV co-infection make an informed decision about Hepatitis C treatment.

This study evaluates the effect of sofosbuvir/ledipasvir (SOF/LDV) treatment on the pharmacokinetics (PK) and renal safety of tenofovir. Subjects receiving tenofovir-based antiretroviral therapy with human immunodeficiency virus (HIV) protease inhibitors (HIV PI/r) and initiating SOF/LDV treatment for Hepatitis C virus (HCV) will be invited to participate. The study consists of three visits: a screening visit and two abbreviated 4-hour pharmacokinetic visits (one before initiating SOF/LDV and a second approximately 4 weeks after initiating SOF/LDV).

Persons who inject drugs (PWID) are overrepresented among hepatitis C infected patients, but underrepresented among those who are treated, despite many studies showing that treatment is feasible and effective in this population. The hepatitis C diagnosis and pre-treatment evaluation are multistep processes. Every step is a potential occasion for disengagement and loss to follow-up. This is especially true with hard-to-reach populations such as PWID in whom competing needs are numerous and psychosocial situation can change rapidly. By using new technologies that can quickly provide clinical results, like Xpert HCV Viral Load (Cepheid) and transient elastography (fibroscan), a provider could determine if a patient needs treatment rapidly or not on the day of the initial visit. The aim of this study is to explore whether an accelerated pre-treatment evaluation can result in an improved linkage-to-care (defined as linkage to health care, addiction or social services) and, eventually, linkage-to-treatment among PWID.

Thalassemics can develop liver fibrosis because of iron overload and hepatitis C infection. The latter is the main risk factor for liver fibrosis in transfusion dependent thalassemics. Excess liver iron is clearly recognized as a co factor for the development of advanced fibrosis in patients with hepatitis virus C infection. Hyaluronic acid serum levels correlate with histological stages of liver fibrosis in hepatitis C patients, so it has a good diagnostic accuracy as a non invasive assessment of fibrosis and cirrhosis.there is evidence that suggests Spirulina may help to protect against liver damage, cirrhosis and liver failure in those with chronic liver disease.

The purpose of this study is to investigate the pharmacokinetics, safety, and tolerability of the co-administration of VCH-222 and telaprevir in healthy subjects.

The purpose of this follow-up study is to evaluate the frequency and persistence of specific viral mutations in response to treatment with ABT-333 (dasabuvir).

The main purpose of this study is to determine whether psychological intervention is effective in improving quality of life, mood, and relationships among adults with hepatitis C virus and cirrhosis awaiting liver transplantation.

Patients with HCV infection often suffer from chronic fatigue, depression and reduced cognition, even before evolving severe liver fibrosis, liver cirrhosis and hepatic encephalopathy. It is currently unclear to what extent the symptoms er due to a direct pathological effects of the virus itself, or due to pre-existing psychiatric disease. There is a complex relationship between prior or existing drug abuse, psychiatric disease and HCV infection, that makes it difficult to establish cause-effect relationships. A biological mechanism has been suggested to contribute to development of cerebral dysfunction in the patients. According to the prevailing Trojan Horses hypothesis circulating lymphocytes cross the blood brain barrier carrying HCV to the central nervous system and virus is subsequently replicated in the macrophages and the microglia in brain as a separate compartment. As part of the immunological response to viral replication, neurodegenerative processes takes place with a harmful effect on the neural circuit and cerebral function. Identification of HCV RNA negative strand, a replication product, in brain tissue from HCV patients, as part of autopsy studies, supports the hypothesis. Moreover, HCV patients have also been observed with abnormal metabolic concentrations in the frontal white substance and the basal ganglia by MRI spectroscopy compared to control groups. The overall study objective is to assess cerebral function with particular emphasis on cognitive functions in HCV patients (genotypes 1,2,3 and 4) by use of a neuropsychiatric test battery. Furthermore, the patients will be examined by MRI, including magnetization transfer, diffusion tensor and contrast perfusion, in order to perform measurements of cerebral volumetric and microstructure. Finally, HCV analysis, including viral sequences and cytokine profiles, in serum and cerebrospinal fluid will be carried out in the study population.