Active clinical trials for "Hepatitis B"

As HBsAg clearance is uncommon in chronic hepatitis B (CHB) patients on nucleoside analogues (NAs) therapy. The purpose of this study is to optimize HBsAg clearance in CHB Patients with sequential treatment of pegylated interferon alpha and NAs.

There has been no report on whether the patients with colorectal cancer who are also inactive Hepatitis B Carriers should receive Prophylactic Use or preemptive Use of an Anti-viral Drug Entecavir. This open, randomized controlled clinical trial aims to compare the impact of the prophylactic use or preemptive use of an anti-viral drug Entecavir on the outcomes of patients with colorectal cancer who are also inactive hepatitis B carriers during chemotherapy and the subsequent follow-ups.

This study looks at protection in 10-11 and 15-16 year olds, immunized as infants with Hepatitis B (HB) vaccine to see if they still have residual protection against Hepatitis B disease. Adolescents will be invited to have a blood test and those without a minimal level of protection (antibody titer) will be offered a "test" vaccination to see if they still have capacity to recall an immune response. About one month later they will get another blood test to see if a booster response occurred. A few participants will have lost protection (no booster response) and will be offered a second HB vaccination to restore protection. Results of this study could influence the way in which children in British Columbia (BC) are immunized against HB disease.

To evaluate whether hepatitis B immune globulin with a high level of antibody against the hepatitis B antigen would be capable of interrupting maternal-fetal transmission of hepatitis B virus, the single most important route of hepatitis spread in the entire Third World.

The purpose of this study is to assess the incidence of participants who reach hepatitis B surface antigen (HBsAg) seroclearance after discontinuing nucleos(t)ide analog (NA) therapy in participants with HBsAg less than or equal to (<=) 100 international units per milliliter (IU/mL) and participants with HBsAg greater than (>) 100 IU/mL to <= 500 IU/mL at baseline.

The goal of this natural history study is to examine the immune responses to the Heplisav-B vaccine in Veterans living with HIV who were non-responders to prior HBV vaccination. A comparison group of HBV vaccine nonresponders without HIV infection will be enrolled to characterize the HIV-associated immune alterations that affect vaccine response. The investigators hypothesize that TLR9-mediated innate immune stimulation with Heplisav will elicit HBV seroprotection despite prior vaccination failures in persons living with HIV, compared to HIV uninfected individuals. Participants eligible for Heplisav-B vaccination will be asked to provide blood samples at multiple timepoints before and after their vaccination.

Fatty liver disease is increasingly recognized in patients with chronic hepatitis B (CHB). Whether concurrent fatty liver disease affects the long-term outcomes of CHB is unclear. The investigators performed a longitudinal study to investigate the prognostic relevance of concurrent fatty liver disease for patients with CHB receiving antiviral therapy.

The hypothesis of this investigation stresses that the current understanding of the prevalence of HCV infection in the general population and in different subgroups will serve to lay out medium- and long-term measures for action geared toward reducing the disease burden through preventive, research, screening and therapeutic measures. Aim: To determine the prevalence of seropositivity and chronic infection with the HCV and to analyze the associated factors. To analyze and infer different screening strategies for HCV infection based on the at-risk groups/cohorts of elevated prevalence detected. to assess the efficiency of screening strategies and the subsequent cost-effectiveness of treatment in the general population

(1) Due to missed childhood vaccination programs, the majority of adult patients with NAFLD in Canada do not have immunity to hepatitis B. (2) Adults with NAFLD who receive the HBV vaccine have reduced immunogenic responses in the setting of obesity (i.e., protective anti-HBs titres). Aims: (1) To determine the sero-prevalence of immunity against hepatitis B in a cohort of prospectively evaluated adult NAFLD patients. (2) To prospectively determine HBV vaccine responses (anti-HBs titres) in adult NAFLD patients.

Infection and cancer is a major cause of death and morbidity, and may be preventable through vaccination. It is not fully understood at the molecular level why some people respond better than others to vaccines until now the technology to assess this has not been available. This has impaired vaccine development. The overall goal of the Human Vaccines Project is to understand the 'rules' of how vaccines work. In this demonstration project the investigators will vaccinate healthy adults with hepatitis B vaccine to start to understand better how it works, ultimately helping with rational vaccine design in the future.