A Trial to Evaluate the Efficacy and Safety of WGc0201 in Patients With Chronic Hepatitis B Virus Infection (WGc0201-HBV)

June 30, 2026 updated by: Jiyan Liu

An Open-Label, Single-Arm, Dose-Escalation Phase I Clinical Trial to Evaluate the Efficacy and Safety of WGc0201 in Patients With Chronic Hepatitis B Virus Infection

Existing nucleoside analogues (NAs) and interferon therapy for chronic hepatitis B (CHB) have limitations, including drug resistance, low HBsAg clearance rates, and irreversible immunosuppression. Therapeutic vaccines, by activating virus-specific T cells and B cells, hold promise for achieving functional cure (HBsAg clearance + sustained HBV DNA negativity). This study is an open-label, single-arm, dose-escalation Phase I clinical trial. The study population consists of patients with chronic hepatitis B virus infection who have achieved virological stability following standard antiviral therapy. Phase I (dose exploration): three dose groups, with three patients per group. The primary objective is to observe and evaluate the safety of the WGc0201 vaccine in the study population (incidence and severity of adverse events).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Although current antiviral treatments have achieved some clinical efficacy, there is still a lack of treatments that can truly cure hepatitis B, especially those that can completely eliminate HBsAg and prevent viral recurrence. Therapeutic hepatitis B vaccines are considered a potential treatment option for chronic hepatitis B and drug-resistant hepatitis B patients in the future. The development goal of therapeutic vaccines is to activate the body's specific immune response, promote the immune system to recognize and eliminate the hepatitis B virus, thereby achieving virological clearance and functional cure. WGc-0201 injection is an mRNA vaccine encoding the HBV-positive tumor antigen HBx. Preliminary basic research conducted by the team suggests that this vaccine has excellent safety, not only effectively clearing HBV DNA but also reducing HBsAg levels in serum and liver tissue while enhancing the expansion of specific T lymphocytes in the body. Therefore, we believe that the efficacy and safety of WGc0201 in treating hepatitis B warrant further investigation. We aim to use this Phase I study to preliminarily explore the therapeutic efficacy and safety of WGc0201 in this population and lay the groundwork for future clinical trials.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
9

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Sichuan
      • Chengdu, Sichuan, China, 610041
        • Recruiting
        • West China Hospital of Sichuan University
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Adult males or females aged ≥18 to ≤65 years;
  2. 18≤ BMI ≤32 kg/m2;
  3. Diagnosis of chronic hepatitis B infection (HBsAg positive for more than 6 months and detectable at screening);
  4. Received only nucleoside (acid) analog therapy in the 12 months prior to screening and are still taking it regularly;
  5. HBV-DNA viral load below 100 IU/ml;
  6. HBsAg <1500 IU/ml.

Exclusion Criteria:

  1. Includes HIV, co-infection with HDV, and liver biopsy suggestive of cirrhosis or advanced fibrosis within 6 months prior to screening (Metavir activity level A3 and stages F3 and F4; Ishak stages 4-6);
  2. If no liver biopsy was documented, a Fibroscan screen result >9 kPa (or equivalent) or a FibroTest screen result >0.48 and an APRI (Aspartate Aminotransferase to Platelet Ratio Index) >1 within ≤6 months of screening.
  3. Alanine aminotransferase >3x ULN;
  4. Internationally standardized ratio > 1.5;
  5. Albumin <3.5 g/dl;
  6. Direct bilirubin > 1.5x ULN;
  7. Platelet count <100,000/μl;
  8. History of hepatic failure (e.g., ascites, encephalopathy, or variceal bleeding) or prior hepatocellular carcinoma;
  9. Diseases or past history of the following systems or serious illnesses that the investigator considers inappropriate for participation in this trial, such as: cardiovascular system: unstable or significant cardiovascular disease, such as angina pectoris, recent episode of myocardial infarction, congestive heart failure, severe hypertension, significant arrhythmia or ECG abnormality, etc.; respiratory system: bronchiectasis, bronchial asthma, chronic obstructive pulmonary disease, respiratory failure, etc.; endocrine and metabolic diseases: diabetes mellitus, thyroid disease poorly controlled by medication, etc.; others: autoimmune diseases, active tuberculosis, malignant diseases (e.g., tumors), history of neurological or psychiatric disorders, etc;
  10. Subjects who have participated in any drug/device clinical study within 3 months prior to receiving the experimental drug.
  11. History of organ transplantation (except corneal transplantation and hair transplantation).
  12. Those with alcoholism (alcohol consumption for more than 5 years prior to the screening period, with alcohol content greater than 40g per day for men and 20g per day for women) or known drug dependence.
  13. Subjects who have a birth plan or a plan to donate sperm or eggs during the screening period, during the trial, and for 6 months after the end of the trial or who are unwilling to use effective contraception.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: WGc0201
Wgc0201 will be administered by intramuscular route, with a total of 9 doses
Drug: WGc0201
Wgc0201 will be administered by intramuscular route, with a total of 9 doses.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Adverse events (AEs)
Time Frame: 12 weeks
CATAE 5.0 standard
12 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Immunogenicity of the vaccine (HBV-specific T-cell response)
Time Frame: 12 weeks
ELISpot test
12 weeks
changes in virological indicators (HBV DNA/RNA)
Time Frame: 12 weeks
qPCR、RT-qPCR
12 weeks
changes in virological indicators (HBsAg)
Time Frame: 12 weeks
CLIA/ECLIA
12 weeks
changes in virological indicators (ALT normalization rate)
Time Frame: 12 weeks
Kinetic (Rate) Assay
12 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Jiyan Liu

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
West China Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 1, 2031

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 30, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 26, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 4, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 1, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 30, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • WGc0201-HBV-001
  • 274953 (Registry Identifier: Chinese Clinical Trial Registry)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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