Active clinical trials for "Hepatitis B"

This phase 2 trial aims to evaluate the efficacy of entecavir prophylacxis for hepatitis B virus (HBV) reactivation that continues until 12 months after completing CD20 monoclonal antibody therapy in patients with CD20-positive B-cell lymphomas and resolved hepatitis B (negative hepatitis B surface antigen, positive hepatitis B core antibody).

The investigators' research is aimed at developing more effective, finite approaches for managing individual patients with chronic hepatitis B (CHB). This prospective clinical and basic scientific study exclusively focuses on patients with the early antigen negative form of disease, which in developed countries is treated indefinitely with antiviral drugs. The investigators' study "BeNEG-DO," directly offers patients who are already taking standard oral Hepatitis B Virus (HBV) antiviral therapy for at least 192 weeks the option to stop or continue treatment. Drawing on data from pilot studies, including the investigators' own University of California, San Francisco and Sutter Institutional Review Board-approved study, the investigators will examine a finite HBV treatment strategy on clinical outcome and safety. In conjunction, the investigators will study immunologic mechanisms and gene expression profiles that correlate with and predict the post-treatment clinical course. The BeNEG-DO study could seriously question, and potentially change, the current treatment paradigm for millions of patients with CHB and also lead to new disease-terminating antiviral therapeutics.

The purpose of this study is to assess changes in intrahepatic hepatitis B surface antigen (HBsAg) between baseline and on-treatment liver biopsy in response to JNJ-3989-based combination treatment.

A research study to observe the safety, efficacy and tolerability of switching from Entecavir (ETV) to Tenofovir Alafenamide TAF in patients with chronic hepatitis B

This is a single-center, randomized, active-controlled, parallel-design, double-blind, phase I study to evaluate the safety and immunogenicity of a single dose of APV006 in healthy adults.

Migrants' overall health status may be improved by increasing the detection of certain infectious diseases and other conditions for which effective care is available. This can be achieved through a systematic screening of these conditions using innovative and digital solutions implemented in routine health care. This study aims to evaluate the implementation of a screening programme for migrants at primary care level in two different settings of Spain (Catalonia and Andalusia) using an innovative digital and user-friendly software tool (ISMiHealth). In Catalonia, the ISMiHealth tool has already been integrated into the Electronic Patient Record (EPR) system (eCAP) as part of a pilot study in 2018; currently, the research team aims to validate the tool in a higher number of primary care centres in this area. Therefore, a pragmatic cluster randomised controlled trial will be conducted with two parallel groups, in which selected centres using the novel software ISMiHealth will be compared to others that follow the current routine practice. On the other hand, in Andalusia a pilot cluster randomised controlled trial will be carried out, where the ISMiHealth tool will be implemented in the EPR system (DIRAYA) to evaluate the preliminary effectiveness of the tool in other settings. The ISMiHealth software is a clinical decision support system that provides recommendations for primary healthcare professionals on screening for targeted conditions. It currently includes: 7 communicable diseases (Human immunodeficiency virus, Hepatitis B and C virus, Tuberculosis, Chagas diseases, strongyloidiasis and schistosomiasis) and one key health condition (female genital mutilation). Through routinely collected variables (country of birth, age, and sex), the software performs an individualised risk assessment and provides real-time prompts to healthcare professionals on screening for the selected health conditions. In any case, health professionals will be responsible for requesting screening tests and/or referrals to specialists.

At present, chronic kidney disease population are vaccinated with hepatitis B vaccine according to the standard three-dose schedule immunization program, and the effect of preventing HBV infection is not ideal. This is a randomized, controlled trial. The study will evaluate the immunogenicity and persistence of 20 µg and 60 µg recombinant hepatitis B vaccine with three or four injections at months 0, 1, and 6 or 0, 1, 2, and 6 in chronic kidney disease population.

International migration to Chile has sharply increased since 2010. Particularly, Haitian migration now totals approximately 200.000 people. Preliminary results show a high prevalence of hepatitis B infection in this population. Approximately 35% of adult Haitian migrants in Chile have been exposed to hepatitis B infection. In this study the investigators aim to study the clinical and molecular characteristics of this infection and also to assess the serological response to an accelerated schedule of hepatitis B vaccination (0, 1 and 2 months).

The overall aim of the project is to establish an international multi-cohort research platform of HIV/HBV-coinfected individuals treated with tenofovir to improve our understanding of the determinants of treatment outcomes.

Mother-to-Child-Transmission (MTCT) of HBV is the most important route in high endemic countries. Although active-passive immune prophylaxis is generally administrated to infants delivered by HBsAg positive women, there are a lot of people infected with HBV in China. High HBV DNA load (>10^5IU/ml) is the vital cause of MTCT. So some researchers used TDF （tenofovir） or LDT（telbivudine） to treat patients with high HBV DNA load during middle, late pregnancy, in order to decrease MTCT. As a result, some data about it were gradually reported in late years. Recently, American Association for the Study of Liver Diseases, European Association for the Study of Liver Diseases and China guidelines for CHB (chronic hepatitis B) suggest that pregnant women with high HBV DNA load be treated with TDF or LDT at 24-28 weeks of gestation to lower MTCT of HBV. Although TDF or LDT is classified as pregnancy B drugs by FDA, and many studies report that MTCT rate of HBV decreases after women with high HBV DNA load are administrated with TDF or LDT at 24-28 weeks of gestation, a few birth defects are reported. Furthermore, the long-effect of TDF or LDT on infants remains unclear thoroughly. Some CHB women had severe liver dysfunction before pregnancy or during pregnancy, and routine liver protection therapy could not effect. Some of them could develop into liver failure, fibrosis, cirrhosis, and even died. Moreover, severe liver dysfunction often leads to adverse effects to pregnant women and fetuses, such as pregnancy failure, lower weight, premature birth, etc. As a result, these women have to accept TDF or LDT before pregnancy, or during early pregnancy. So the long-effect of TDF or LDT on infants needs thoroughly investigating. Taken together, the investigators will enroll women with chronic HBV infection and evaluate their state of illness. Then the investigators treat participants with TDF or LDT or routine liver protection therapy, and follow up the participants for a long period. The investigators' objectives are as follows: A, To clarify efficacy and adverse effects of TDF/LDT in preventing MTCT between immune-tolerant and immune-active CHB patients. B, To clarify efficacy and adverse effects of TDF/LDT in preventing MTCT during different trimesters of pregnancy. C, To compare MTCT rate between patients received TDF/LDT therapy and patients without TDF/LDT therapy. D, To compare MTCT rate and adverse effects between LDT and TDF.