Active clinical trials for "Hepatitis A"

The purpose of this study is to determine the disease progression in CHB/NAFLD compared with CHB and NAFLD including liver cirrhosis, cirrhotic complications and hepatocellular carcinoma (HCC).

Hepatitis B virus (HBV) infection is still a major public health problem worldwide. There are 260 million people with chronic HBV infection in the world, and 890,000 people die of HBV-related diseases annually. Mother-to-child transmission (MTCT) is still the main transmission route of HBV in high-endemic areas, such as China, sub-Saharan Africa, etc. Fortunately, the morbidity of HBV infection is gradually decreased in China, because newborns are administrated with the combined immunization of hepatitis B vaccine and hepatitis B immunoglobulin (HBIG) widely. However, some infants born of mothers with high HBV DNA load (≥2×10^5 IU/ml) are still infected with HBV even if these infants receive the combined immunization on time. Therefore, guidelines including American Association for the Study of Liver Diseases (AASLD) and European Association for the Study of Liver Diseases (EASL) recommend that pregnant women with high HBV DNA load should take anti-hepatitis B viral drugs (tenofovir disoproxil fumarate or terbivudine) to reduce MTCT of HBV from gestation 24-28 weeks. Although tenofovir disoproxil fumarate (TDF) has been classified as B drug for pregnancy by Food and Drug Administration (FDA), some side effects of TDF are reported. For example, neutropenia and the decrease of bone mineral density are found in early age infants who are ever exposed to TDF during their fetal life. Tenofovir alafenamide (TAF), a new prodrug of tenofovir (TFV), has a higher antiviral potency, a higher peripheral blood mononuclear cell (PBMC) intracellular tenofovir diphosphate (TFVpp) level and a lower plasma TFV concentration. As the successor of TDF, the dose of TAF that is took orally every day is approximately 1/10 of TDF. TAF has a much lower risk of kidney toxicity and has almost no effect on the bone mineral density. TAF has been approved and recommended as the first-line drug to treat patients with chronic hepatitis B (CHB) by AASLD, EASL, etc. However, there are relatively few data of TAF on pregnancies with high HBV DNA load. It is urgently to clarify the safety and efficacy of TAF on interrupting MTCT of HBV in pregnancies with high HBV DNA load. In the present study, the investigators enroll middle/late pregnancies with high HBV DNA load(≥2×10^5 IU/ml). The participants are randomly divided into two groups. Then the participants are treated with TAF or TDF respectively. All enrolled participants are followed-up for 2 years. Objectives of the present study are as follows: A. To clarify safety and efficacy of TAF on interrupting MTCT of HBV in middle/late pregnancies with high HBV DNA load. B. To clarify effects of TAF on obstetric complications in middle/late pregnancies with CHB. C. To clarify effects of TAF on birth defects of infants born in mothers with CHB. D. To clarify the change of virology and biochemistry indexes in women with CHB during pregnancy and postpartum. E. To clarify effects of TAF treatment on participants. F. To clarify growth parameters of the infants exposed to TAF during their fetal life. G. To clarify the pharmacokinetics of TAF in pregnant populations.

The aim of study is to evaluate the current prevalence of HDV infection, and comprehensively analyze the interaction between HDV and HBV infections in the era of NAs in Taiwan. Investigators plan to set up a platform for HDV positive patients in Taiwan to invite sites or hepatologists who are interested in this field.

This is a retrospective, non-interventional study. Investigators from infectious diseases and gastroenterology departments will participate this study. Patients data will be collected from hospital medical records.

Background: Chronic hepatitis D is a serious liver disease caused by a virus. Currently, no medications are approved to treat chronic hepatitis D. Objective: To test a combination of 3 drugs in people with chronic hepatitis D. Eligibility: People 18 years or older with chronic hepatitis D. Design: Participants will be in the study about 2 years. They will have 3 inpatient stays of 3 to 5 days. Participants will be screened. They will have a physical exam with blood tests. They will have a test of their heart function and an ultrasound: a wand that uses sound waves to create images of the liver will be rubbed over the skin on their torso. Participants will stay in the clinic for a 3-day baseline visit. They will have imaging scans, an eye exam, and a visit with a reproductive specialist. They will have a liver biopsy: about 1 inch of liver tissue will be removed, either with a tube inserted through a vein in the neck, or with a needle inserted through the participant s side. Participants will take the study drugs for 48 weeks. Two of them are tablets taken twice a day at home; 1 is a shot administered once a week. Participants will begin taking the drugs during a 5-day stay in the clinic. Then they will have 15 outpatient visits while taking the drugs and 7 more after they finish. The last 3-day clinic stay will be 6 months after participants finish taking the drugs. The liver biopsy, imaging scans, and other tests will be repeated.

This study aims to assess the efficacy and safety of bulevirtide (BLV) in chronic hepatitis D patients treated in Greek liver centers.

The main goal of this study is to collect post marketing data from patients with chronic hepatitis D virus (HDV) infection who are treated with bulevirtide to describe the long-term effects of bulevirtide treatment and evaluate the safety of participants treated with bulevirtide.

Background: The COVID-19 global pandemic killed more than 6 million people worldwide. Several vaccines have been developed against the virus that causes this disease. These vaccines are effective at preventing severe symptoms and death from COVID-19. Some people with chronic liver disease, especially those with an advanced condition called cirrhosis, do not respond to many vaccines as well as healthy people do. The goal of this natural history study is to find out how well people with chronic liver disease respond to the COVID-19 vaccines. Objective: To learn how chronic liver disease affects the body s immune response to vaccination against COVID-19. Eligibility: People aged 18 years or older with chronic liver disease. They must also be enrolled in protocol 91-DK-0214 or 18-DK-0091. Design: Participants will have 3 visits, each spaced 6 months apart. Each visit will last 2 hours. Participants will have their vital signs recorded. These include age, sex, race, height, and weight. They will give their medical history. At each visit, participants will have blood drawn through a needle inserted into a vein in the arm. The sample drawn at each visit will be from 1 to 8 tablespoons. At each visit, participants will fill out a questionnaire. They will answer questions about whether they have been vaccinated against COVID-19; whether they have had COVID-19; and whether they have been exposed to someone who had COVID-19. The questionnaire will take 10 to 15 minutes. Researchers will also look at results of past blood tests from other research studies.

CB06-036 is an investigational drug developed by Shanghai Zhimeng Biopharma Inc. for the treatment of Chronic Hepatitis B.

To acquire blood samples from subjects for various purposes, including: i) determining the sensitivity and specificity of select DNA methylation markers for the detection of various types of cancer, ii) identifying benign conditions that may induce false positive or false negative results, and iii) defining the effects of potential interfering substances, such as chemotherapy drugs.