Active clinical trials for "Hepatitis B"

We propose a largely retrospective study with short-term prospective follow-up in a subgroup of patients who have not yet been treated with 48 weeks of entecavir following partial response to adefovir. The aim of the study is to describe sequential virologic response to adefovir and entecavir.

The purpose of this study is to evaluate the durability of antiviral activity in chronic hepatitis B patients who showed complete response in L-FMAU-301,L-FMAU-302 or L-FMAU-303 trial.

International studies have repeatedly documented a substantial prevalence of sexual risk behaviors and high rates of human immunodeficiency virus (HIV) and other sexually transmitted infections (STI) ranging from 5%-56% amongst long-distance truck drivers ("truckers") living in diverse international settings including India, Bangladesh, South Africa, China, Laos and Thailand. The prevalence of sexual risk factors and STI/HIV in US drivers is unknown. This proposal will provide both qualitative and quantitative data on HIV risk behaviors by interviewing and testing truckers working for established long-distance trucking firms, the sector which accounts for most of the jobs in the trucking and warehousing industry in the United States. The data obtained from this study will be used to inform the development of an HIV prevention intervention for long-haul truck drivers.

The aim of this study is to evaluate the prevalence of hepatitis B in Vallés Occidental. Also, describe the stage of the disease, and whether if they are under medical treatment or not.

This study will assess the seroprevalence of hepatitis A virus (HAV), hepatitis B virus (HBV) and Bordetella pertussis (B. pertussis) in adolescents and young adults in Mexico.

This is a prospective HIV cohort that aims to establish causes of liver disease among HIV-infected individuals in Zambia, including viral hepatitis and alcohol.

The purpose of this study is to determine whether short-term Atorvastatin can increase the immunity response to hepatitis B vaccination in vaccine Nonresponders.

This is a clinical study for GC1102 to demonstrate preventing the recurrence of hepatitis B virus (HBV) infection following liver transplantation and a dose-finding study to determine its optional dose.

Immunosuppression induced by cancer treatment increases the risk of hepatitis B virus (HBV) and hepatitis C virus (HCV) reactivations. These viral reactivations may be asymptomatic but can cause fulminant hepatitis and death. More, they impact the treatment of cancer by chemotherapy delays or stops. They can occur during cancer treatment but also after stopping, at the immunological rebound. This risk persists for at least 6 months after cessation. The key to the prevention, and the first step, is serological testing. It is also the main problem because international recommendations diverge. Hepatologists and infectious disease specialists recommend routine screening HBV of all candidates for immunosuppressive therapy. These recommendations are more implemented by hematologists, given the frequency of HBV reactivation associated to haematological malignancies. Clinical oncology societies guidelines suggest a selective screening in case of risk factors of hepatitis B or in patients with a strong immunosuppression (such as anti-CD20 based treatment, stem cell transplantation or lymphoma treatment). The consequence of these differences is a sub-screening by oncologists and the persistence of fatal cases. Screening before cytotoxic chemotherapy for solid tumors in countries with low prevalence of HBV and HCV virus is questionable. Selective screening of patients at risk HBV and HCV can be assessed.

HBV-related acute-on-chronic liver failure (HBV-ACLF) deteriorates rapidly with a high short-term mortality. Early identification and accurate prognostic prediction was critical to improve survival rate. This study was sought to determine the liver volumetry as predictor for short-term mortality in HBV-ACLF and develop a simpler prognostic model based on liver morphology. Liver volumetry were determined from CT at admission. Univariate and multivariate logistic regression were used to identify the optimum prognostic indicators and develop prognostic model. Additionally, receiver operating characteristic curves were analyzed to evaluate the predictive ability of the model.