Active clinical trials for "Hepatitis B, Chronic"

Multicenter cohort study of individuals reporting behavioral risks of HIV acquisition, recruited among those presenting for testing for HIV and other sexually transmitted infections. Overarching goal: to study factors associated with uptake of HIV prevention and (re)testing services in medium-sized cities in Thailand. Primary objective: To estimate the incidence of HIV and other sexually transmitted infections (syphilis, chronic hepatitis B and C) among individuals presenting for retesting. Secondary objectives: To evaluate the uptake of pre-exposure prophylaxis To assess retention in the study To evaluate client HIV knowledge To describe HIV prevalence and characteristics of individuals newly diagnosed with HIV To describe characteristics of individuals at risk of HIV infection To assess the quality of the testing and referral services.

Pregnancy is a complex and coordinated physiological process. Pregnancy and the postpartum period are associated with unique changes in the immune system that may impact the natural history of autoimmune diseases and immune-mediated infections. In the postpartum period. ALT flares have been reported in 20%-60% of untreated women and were more likely to occur in hepatitis B e antigen (HBeAg)-positive patients. It has been postulated that postpartum ALT flares may arise to rapid immune restitution against hepatitis B virus (HBV) antigens in the liver, when may be a timing of antiviral treatment. A large number of previous studies have focused on studies on the interruption of mother-to-child transmission in women with chronic hepatitis B(CHB), but studies on the prognosis of mothers undergoing pregnancy and delivery are very limited. What are the factors that affect the clearance of HBeAg or HBsAg? What kind of antiviral treatment protocol should be adopted for mothers with CHB? It is not only a problem that needs to be solved urgently in clinical practice, but also can provide some clues for understanding the occurrence and development of HBV infection in women of childbearing age. Overall, this study intends to carry out a multi-center two-way cohort study on E antigen-positive CHB women in 9 hospitals in Shaanxi Province. To observe the dynamic changes of virological parameters in these patients, figure out the factors of the serum HBsAg loss and HBeAg seroconversion, and establish relevant predictive models.

In order to evaluate the feasibility of eliminating mother-to-child transmission (MTCT) of hepatitis B virus (HBV) by 2030, a multi-center, prospective cohorts study was conducted to investigate MTCT of HBV in China.

Cirrhosis or cancer of the liver caused by hepatitis B virus (HBV) are major global health problems. Chronic HBV infection has become more common in Sweden with immigration. The risk of cancer and the availability of effective antivirals has led to more and more people receiving long-term treatment with antiviral drugs. The disadvantages of this treatment are that it does not have a defined duration and that it very rarely leads to the cure. Several published studies suggest that a large proportion of patients who discontinue antiviral therapy after at least three years may achieve lasting cure of the infection or at least do not need to resume treatment. The mechanism of this effect is not known, but it is thought to be due to the fact that the immune response, which is activated when the amount of virus increases after the end of treatment, becomes more effective in eradicating infected liver cells than it was before starting treatment. As a consequence of these findings updated guidelines for treatment of hepatitis B state that for patients that have received nucleoside analogue treatment for > 3 years, discontinuation is an accepted therapeutic alternative. The purpose of the planned study is to investigate the results of discontinued treatment, in terms of clinical outcome as well as immunological and virological mechanisms. The aim is to include 120 patients at four regional infectious diseases clinics (in Gothenburg, Borås, Skövde and Trollhättan), of which 90 will be randomized to discontinue and 30 to continue antiviral treatment. Blood samples will be taken regularly to monitor the outcome and for detailed studies of viral antigens and nucleic acid in the blood and for specific analyzes of the cells of the immune system. The goal is to understand why the discontinued treatment in some patients activates an effective immune response and how such an effect can be predicted even before or early after the treatment is stopped.

This Phase 2a study will assess the safety, antiviral activity, and pharmacokinetics (PK) of ABI-H2158 administered once daily for up to 72 weeks in combination with entecavir (ETV) in participants with chronic hepatitis B virus (HBV) infection.

Open-label, extension study to evaluate the safety and efficacy of combination therapy and its effect on sustained viral response biomarkers.

An open-label, Phase 2, exploratory study to examine the safety and efficacy of inarigivir in non-cirrhotic, hepatitis B treatment-naive subjects with chronic HBV infection.

A Randomized Study of ALG-010133 Drug to Evaluate Safety, Tolerability, Pharmacokinetics and Pharmacodynamics After Single and Multiple Doses in Healthy Volunteers and CHB Subjects

The purpose of this clinical research study is to find out whether a combination of entecavir (ETV) plus tenofovir (TNF) works better against Hepatitis B virus than adefovir (ADV) added to continuing lamivudine (LVD) therapy in patients whose Hepatitis B virus (HBV) is resistant against lamivudine. The safety of this treatment will also be studied.

The efficacy of pegylated interferons in the treatment of chronic hepatitis B has shown superior results to standard of care in patients only infected with hepatitis B. The efficacy of pegylated interferon for the treatment of chronic hepatitis B in HIV-coinfected patients is not known at present. The purpose of this study is to evaluate the efficacy of pegylated interferon in the treatment of chronic hepatitis B in HIV-infected individuals. Apart from evaluating the efficacy of pegylated interferon therapy in this setting as such, i.e. in patients without present or future need of highly active antiretroviral therapy (HAART) for HIV-infection, there is a second purpose of this study, to investigate whether combination treatment of HBV-infection may be superior to pegylated interferon therapy alone. Therefore patients without need of HAART are offered pegylated interferon alfa-2a over 48 weeks. Patients who require HAART are offered emtricitabine / tenofovir DF containing HAART over 72 weeks PLUS pegylated interferon alfa-2a over 48 weeks vs. emtricitabine / tenofovir DF containing HAART over 72 weeks WITHOUT pegylated interferon-alfa-2a.