ACT201 Injection in Participants With Chronic Hepatitis B (CHB) on Nucleos(t)Ide Analog Therapy - Phase Ib

November 4, 2026 updated by: Xiamen Amoytop Biotech Co., Ltd.

A Multicenter, Randomized, Open-label Phase Ib Clinical Trial to Evaluate the Safety and Efficacy of ACT201 Injection in Participants With Chronic Hepatitis B (CHB) Receiving Nucleos(t)Ide Analog Therapy

This is a multicenter, randomized, open-label, parallel-controlled Phase Ib clinical trial. It aims to evaluate the safety and preliminary efficacy of ACT201 Injection combined with standard therapy (PegIFNα, NA) in participants with chronic hepatitis B who are receiving NA treatment. A total of 40 participants with chronic hepatitis B will be enrolled. Eligible participants should have stable NA treatment, HBV DNA < 100 IU/mL, negative HBeAg, and HBsAg ≤ 100 IU/mL. They will be randomized into four treatment groups at a 1:1:1:1 ratio.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet 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.

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.
40

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
      • Beijing, China
        • Beijing Ditan Hospital, Capital Medical University
        • Contact:
          • Minghui Li
      • Wuhan, China
        • Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology
        • Contact:
          • Qin Ning
      • Xi'an, China
        • The Second Affiliated Hospital of Xi'an Jiaotong University
        • Contact:
          • Shuangsuo Dang
      • Xiamen, China
        • The First Affiliated Hospital of Xiamen University
        • Contact:
          • Xiulan Xue

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

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Voluntarily participate in this trial and sign the informed consent form;
  • Aged 18 to 65 years (inclusive), male or female;
  • Body mass index (BMI) ranging from 18 to 32 kg/m² (inclusive);
  • HBsAg-positive or HBV DNA-positive for at least 6 months, or with prior liver biopsy results consistent with chronic HBV infection, or HBsAg-positive and anti-HBc IgM-negative at screening;
  • Receiving stable nucleos(t)ide analogue (NA) therapy at screening;
  • Meeting the specified requirements for HBsAg, HBeAg, HBV DNA and liver function parameters;
  • Willing to use effective contraception with no plan to conceive, donate sperm or donate ova.

Exclusion Criteria:

  • Subjects who have sustained major trauma or undergone major surgery recently, or have a planned surgery;
  • Subjects with uncontrolled, clinically significant abnormalities or other severe illnesses in addition to chronic HBV infection;
  • Subjects with a history of other liver diseases;
  • Subjects with a history of liver cirrhosis;
  • Subjects with imaging findings suggestive of a suspected malignant hepatic lesion;
  • Subjects with prior or current manifestations of hepatic decompensation;
  • Subjects with a history of extrahepatic diseases potentially associated with HBV immune status;
  • Subjects with other diseases associated with vasculitis;
  • Subjects with infections (other than HBV) requiring systemic antiviral or antibacterial therapy at screening;
  • Subjects with a history of malignancy;
  • Subjects with prior solid organ or bone marrow transplantation;
  • Subjects with current or past history of severe psychiatric disorders;
  • Subjects with severe retinopathy or other severe ophthalmologic diseases;
  • Subjects who have received prohibited study drugs previously or currently;
  • Subjects with concomitant hematological diseases;
  • Subjects with abnormal laboratory findings;
  • Subjects with abnormal QTcF interval;
  • Subjects with a history of allergy;
  • Subjects who are breastfeeding or have a positive serum pregnancy test at screening;
  • Subjects participating in another clinical trial, or those who have not completed the washout period specified in the protocol prior to this trial;
  • Any other condition that, in the opinion of the investigator, renders the subject unsuitable for participation in this trial.

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: Randomized
  • Interventional Model: Parallel 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: Group 2
Drug: ACT201 Injection

Subcutaneous injection per assigned dose group; treatment duration shall follow the study protocol.

Other Names:
  • Standard of care（PegIFNα-2b Injection）
Experimental: Group 1
Drug: ACT201 Injection

Subcutaneous injection per assigned dose group; treatment duration shall follow the study protocol.

Other Names:
  • Standard of care（PegIFNα-2b Injection）
Experimental: Group 3
Drug: ACT201 Injection

Subcutaneous injection per assigned dose group; treatment duration shall follow the study protocol.

Other Names:
  • Standard of care（PegIFNα-2b Injection）
Experimental: Group 4
Drug: ACT201 Injection

Subcutaneous injection per assigned dose group; treatment duration shall follow the study protocol.

Other Names:
  • Standard of care（PegIFNα-2b Injection）

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
Time Frame
Safety: number of participants with adverse event (AE), serious adverse events (SAE) and clinically significant examination results. Assessments include vital signs, physical examinations, laboratory tests, and 12-lead electrocardiograms (ECGs).
Time Frame: throughout the full study period,an average of 38 weeks
throughout the full study period,an average of 38 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
Time Frame
HBsAg, HBsAb and HBV DNA levels and changes from baseline
Time Frame: throughout the full study period,an average of 38 weeks
throughout the full study period,an average of 38 weeks
HBsAg seroclearance rate
Time Frame: throughout the full study period,an average of 38 weeks
throughout the full study period,an average of 38 weeks
HBsAg seroconversion rate
Time Frame: throughout the full study period,an average of 38 weeks
throughout the full study period,an average of 38 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.
Xiamen Amoytop Biotech Co., Ltd.

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.
The First Affiliated Hospital of Xiamen University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Xiulan Xue, The First Affiliated Hospital of Xiamen University

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.
November 20, 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.
February 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.
December 1, 2027

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).
November 4, 2026

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.
November 4, 2026

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.
November 10, 2026

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.
November 10, 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.
November 4, 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.
November 1, 2026

More Information

Terms related to this study

Keywords

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.
  • ACT201-4-1-005

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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