View clinical trials related to Hepatitis B.
Filter by: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.
Unmethylated cystine-guanosine dinucleotide (CpG) motifs are pathogen-associated molecular patterns (PAMPs) associated with bacterial and viral-derived DNA that activate the innate and humoral immunity via toll-like receptor 9. This is a randomized controlled pilot study evaluating the clinical and immune correlates of a seroprotective immune response against a CpG-adjuvanted vaccine for hepatitis B.
Protection against Hepatitis B infection is a regulatory and safety cornerstone to infection prevention and control programs involving the healthcare workforce in the United States. Until 2018 when a new adjuvanted vaccine was released, immunization for this population has involved a three-dose series followed by an additional three-dose series for those demonstrating lack of seroprotection. If that lack continued following the second three-dose series, and verification of a negative Hepatitis B antigen status, that person has historically been deemed a non-responder to Hepatitis B vaccine and at potential risk for infection. This non-response status may be used to determine job responsibilities representing excessive risk for the healthcare worker resulting in potential career and practice limitations and decisions. With the release of the new adjuvanted vaccine, there is potential to determine the role that new vaccine may play in promoting an immune response among this non-responding subset of at-risk healthcare workers. The aims of this study include: 1) determining the effect of this adjuvanted vaccine in producing seropositivity in a population of healthcare personnel previously deemed as non-responders following administration of two rounds of the traditional 3-dose series of Hepatitis B vaccine and confirmation of negative Hepatitis B antigen; and 2) determining the personal and professional impact of the lack of immunity to Hepatitis B among healthcare personnel.
Evaluation of novel point of care Hepatitis B diagnostic assays.
The purpose of this study is to evaluate the safety and immunotherapeutic activity of cemiplimab in participants with hepatitis B virus (HBV) on suppressive antiviral therapy.
The purpose of this study is to investigate the efficacy and safety of lenvatinib plus nivolumab compared with lenvatinib monotherapy for patients with advanced hepatitis B virus infection-related hepatocellular carcinoma.
Chronic infection with hepatitis B virus (HBV) is a leading cause of death in adults in sub-Saharan Africa (SSA). Prior to the introduction of the hepatitis B vaccine, main modes of transmission in SSA were perinatal transmission from mother-to-child (MTCT) (10%) and horizontal transmission during early childhood (90%). MTCT occurs through contact with maternal fluids during passage through the birth cana; transplacental transmission and transmission through breastfeeding are rare. In 2009, WHO recommended the administration of hepatitis B vaccination to all newborns within 24 hours of birth to prevent perinatal and early transmissions. In Senegal, the government introduced the monovalent vaccine that can be used within 24 hours after birth in the Expanded Program on Immunization (EPI) in March 2016. Here, we present a study protocol for a sero-epidemiological study of pairs of children aged 9 to 12 months and their mothers, identified through the demographic study, to assess the impact of monovalent vaccine introduced by the national program for prevention of mother-to-child transmission in Senegal. We will also assess the diagnostic performance of loop-mediated isothermal amplification assay (LAMP) to identify people with high viral replication (HBV DNA ≥200,000 IU/ml), compared to a conventional reference test (PCR).
Background: Hepatitis B is a viral infection of the liver. When the immune system tries to clear hepatitis B, it damages the liver. Eventually, the immune system gets exhausted fighting the virus. Researchers want to see if giving large doses of an antibody (HBIg) with the drug peginterferon will boost the immune system in people with this disease. Objectives: To observe the effect of large doses of antibody against the hepatitis B surface antigen on the immune response to the virus. To see if removing hepatitis B surface antigen from the blood enhances the action of peginterferon. Eligibility: Adults ages 18 and older with hepatitis B Design: Participants will be screened twice with a medical history, physical exam, and blood and urine tests. Participants will be randomly put in one of two groups. All participants will get peginterferon for 24 weeks. One group will first get HBIg for 12 weeks. Participants in the combination group will have a 4-day clinic stay. They will have: Repeats of screening tests Eye exam Liver ultrasound The first dose of HBIg by IV over 2 hours These participants will get HBIg at the clinic up to 8 times over 12 weeks then start the peginterferon. All participants will get peginterferon for 24 weeks. They will get it by injection under the skin once a week. They may do this themselves. They will keep a drug diary. They will have 5 visits to assess response and monitoring for safety.. After stopping the study drug, participants will have 4 follow-up visits over 36 weeks. They will repeat screening tests and have 1 liver ultrasound.
This is a Phase 2a, multi-center, randomized, double-blind, placebo-controlled study evaluating the safety, efficacy, and pharmacokinetics (PK) of AL-3778 in combination with Peg-IFN in subjects with Hepatitis B e antigen (HBeAg) positive CHB virus infection who are treatment-naïve. The study will consist of a screening phase , a double-blind treatment phase followed by treatment with Peg-IFN alone, and a post-treatment follow-up phase. Approximately 30 subjects to complete the study. Eligible subjects will be randomized into 2 treatment arms in a 2:1 ratio (active:placebo) to receive one of the following treatments: - Arm A: Peg-IFN plus AL-3778 (N=20) - Arm B: Peg-IFN plus matching placebo (N=10)
Chronic liver diseases of differing etiologies are among the leading causes of morbidity and mortality worldwide [1]. Chronic liver disease progresses through different pathological stages that vary from mild hepatic inflammation without fibrosis to advanced hepatic fibrosis and cirrhosis [2]. Assessment of the stage of liver disease is important for diagnosis, treatment, and follow-up both during treatment and after cessation of treatment. A liver biopsy is the oldest and most accurate method used to evaluate liver histology and the progression of chronic liver disease. Furthermore, different histological scoring systems have been developed and modified [3]. A liver biopsy is considered the gold standard for assessing liver histology [4]. During the pathological progression of liver fibrosis, excessive amounts of extracellular matrix build up; furthermore, serum levels of various biomarkers change, in addition to the appearance of new biomarkers in the serum during the different stages of fibrosis [2, 5]. Recently many noninvasive markers (NIMs) for assessing liver fibrosis have been developed, and they are frequently used in clinical practice. They have been validated in different studies, and some were found to be highly accurate in the assessment of liver fibrosis compared with liver biopsies [6-7], which have always been used as the standard reference method for evaluating the accuracy of noninvasive methods. There are limited studies documenting the cost effectiveness of non invasive markers over invasive technique. Most people with chronic Hepatitis B or C are unaware of their infection, putting them at serious risk of developing cirrhosis or liver cancer which are life threatening. Similarly patients with non alcoholic fatty liver diseases are unaware about fibrosis in liver. About 20-50% of persistent infection ends up into fibrosis and finally cirrhosis. Invasive and non invasive diagnostic methods are widely used to detect the fibrosis. Clinicians use different drugs and combinations to treat HBV and HCV infections. However, there is scarcity of a longitudinal prospective study to assess the cost effectiveness of these diagnostic measures. We planned to conduct a retrospective followed by prospective cohort study among all cases that underwent biopsy in ILBS or GB Pant Hospital since 2000 till Dec 2020 with HBV infection, HCV infection, or non alcoholic fatty liver disease. For retrospective cohort study, we will collect data from hospital information system for all patients with HBV infection, HCV infection, or non alcoholic fatty liver disease, who underwent biopsy during the period of 2000-Dec 2015. The new patients with HBV infection, HCV infection, or non alcoholic fatty liver disease who will undergo biopsy during the period Jan 2016- Dec 2020 will serve as a cohort for prospective design. We will collect socio-demographic data, clinical data, family history, personal history, medical history, anthropometry, biochemical and radiological data from each patient. We will also be conducting a cost effective analysis for various non invasive markers against biopsy as a gold standard in predicting fibrosis, both for retrospective and prospective cohorts. For prospective cohort study, after evaluation of baseline biopsy results, the cases with metavir fibrosis score (F0-3) will be followed for a period of 5 years to document incidence of development and progression of fibrosis. No additional investigation or test will be asked to the patient for the study. We will also develop a predicting model for development and progression of fibrosis.