Active clinical trials for "Hepatitis B"

The objective of this study is to determine the safety and efficacy of transplanting lungs from hepatitis B virus (HBV) nucleic acid test positive (NAT+) donors into HBV vaccinated HBV surface antibody positive (sAb+) lung transplant candidates, who will then be treated with Hepatitis B Immune Globulin (HBIG) and entecavir, tenofovir disoproxil, or tenofovir alafenamide.

This is the first in human study of 162, and the primary objective is to evaluate the safety and tolerability of 162 with a single ascending dose in healthy adult subjects. The dose-escalation stage will be conducted sequentially at 5 dose levels, which are 100 mg in the pre-test, and 200 mg, 400 mg, 800 mg and 1200 mg in the formal test. Two healthy adult subjects will be enrolled at 100 mg dose level and all given 162. Eight healthy adult subjects will be enrolled at each remaining dose levels (200 mg, 400 mg, 800 mg and 1200 mg), respectively.

This Phase 1b clinical study is a multi-center, open-label, dose escalation, prime only, and prime plus boost therapeutic vaccination study of 2 distinct chimpanzee adenoviral vectors (AdC6 and AdC7), containing parts of hepatitis B virus (HBV) core and polymerase antigens fused within glycoprotein D in a cohort of chronic hepatitis B (CHB)-infected adult participants who are currently receiving entecavir, tenofovir (tenofovir alafenamide fumarate or tenofovir disoproxil fumarate), or lamivudine, with documented HBV viral load suppression for at least 12 months. Approximately 24 participants will be enrolled in Group 1 and randomized to Cohort 1a or Cohort 1b. Those assigned to Cohort 1a will receive a low dose prime therapeutic vaccination of vector AdC7 on Day 1, followed by a booster vaccination on Day 91 using vector AdC6. Those assigned to Cohort 1b will receive a low dose prime therapeutic vaccination of vector AdC6 on Day 1, and will not receive a booster vaccination. Group 2 will then enroll approximately 24 participants randomized to Cohort 2a or Cohort 2b. Those assigned to Cohort 2a will receive a high dose prime therapeutic vaccination of vector AdC7 on Day 1, followed by a booster vaccination on Day 91 using vector AdC6. Those assigned to Cohort 2b will receive a high dose prime therapeutic vaccination of vector AdC6 on Day 1, and will not receive a booster vaccination. All vaccine doses will be administered by intramuscular (IM) injection. All study participants will be followed for a total of 1 year post-prime vaccination.

To Identify the collected cases who can stop NAs safely with satisfactory clinical outcome including sustain viral remission and HBsAg clearance among chronic hepatitis B(CHB) patients.

In Chronic hepatitis B (CHB) patients receiving long-term sequential Neucleos(t)ides(NAs), majority of these CHB patients experienced drug resistance and switched to Tenofovir disoproxil fumaratate(TDF). However, some of patients on long term TDF experienced impairment of renal function and bone mineral density. After Tenofovir alafenamide(TAF) was in clinical practice, these group of patients got an clinical option to switch from TDF to TAF. The investigators designed a prospective cohort study to evaluate the real life effectiveness and safety in participants with chronic HBV infection switch from TDF to TAF vs. maintaining on TDF.

Evaluation the safety of using human umbilical mesenchymal stem cells to treat patients with hepatitis B cirrhosis. Observe the curative effect of patients with hepatitis B cirrhosis who use human umbilical mesenchymal stem cells to treat. Explore the possible mechanism of human umbilical mesenchymal stem cells to treat patients with hepatitis B cirrhosis.

PD1 blockade has been approved as salvage therapy for advanced hepatocellular carcinoma (HCC). Although there is not solid evidence that PD1 blockade would induce hepatitis B virus (HBV) reactivation, previous clinical trials of PD1 blockade required enrolled patients to receive anti-HBV medications and control the viral load to be under 100-2000 IU/mL before initiation of PD1 blockade therapy. Such a requirement may not be necessary and could delay the treatment. Guidelines for prevention of chemotherapy induced HBV reactivation only suggest combining anti-HBV medications during the chemotherapy course without such a requirement of very load HBV viral load. The investigators hypothesized that under anti-HBV medications, patients with advanced HCC and active chronic hepatitis B virus (HBV) infection can receive durvalumab treatment without increased risks of HBV reactivation and related complications.

In Taiwan, non-cirrhosis CHB patients with mildly elevated ALT are not candidates for antiviral treatment under Taiwan NIH reimbursement criteria. Disease severity could range from mildly liver injury to cirrhosis in this group of patients. There is a substantial population of patients required antiviral treatment, but not fulfill the criteria of reimbursement treatment. For the 2 phase 3 trials of TAF, the treatment criteria of ALT were more than 2x of ULN and did not included liver biopsy as a pre-treatment assessment. In this study, CHB patient with ALT level of 1-2x ULN and significant liver injury evaluated by liver biopsy is the target study population.

After LT, long-term immunosuppressive therapy is required to prevent organ rejection. Therefore, for organs which may harbour OBI, there is a risk of reactivation which may result in liver graft failure. As a consequence, all patients who receive an anti-HBc positive graft will receive antiviral prophylaxis. Currently, all such patients will be commenced on life-long entecavir, which is highly effective in preventing reactivation.2 One major disadvantage of using such a blanket approach is that a significant proportion of anti-HBc donors may not actually have underlying occult HBV infection, and recipients of such grafts may not require lifelong antiviral therapy. Current markers such as HBsAg and HBV DNA are not sensitive enough to detect the presence of OBI. This is the first trial proposed to look at the efficacy of these novel HBV biomarkers in identifying occult HBV infection when used in combination, and to identify patients who will not need long term antiviral prophylaxis.

The goal of this clinical trial is to test ISA104 in patients with chronic hepatitis B. The main question[s] it aims to answer are: How safe is ISA104? Does ISA104 induce immunity against hepatitis B virus? Different doses of the vaccine ISA104 will be administered to participants. These participants are chronic HBV patients being actively treated with antiviral drugs. Researchers will compare the ISA104 vaccine to a placebo.