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New combo therapy aims to clear hepatitis b and d in 20-patient trial

NCT ID NCT04638439

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This early-stage study tested a new treatment approach for adults with chronic hepatitis B or D. Twenty participants received two medications in sequence: P1101 (a type of interferon) followed by an anti-PD1 drug. The main goal was to check safety and tolerability, while also looking for signs that the virus might be cleared, such as loss of hepatitis B surface antigen (HBsAg). The study is now complete.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

20 people

The number who actually took part.

Started

Aug 2022

Finished

Apr 2026

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

20 to 70 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Positive for HBsAg for at least 6 months, either HBeAg (+) or HBeAg (-), and ALT ≤ 10X ULN at screening; 2. Interferon naïve; 3. Quantitative HBsAg Level \< 5,000 IU/mL at screening; HBV DNA \< 2,000 IU/mL (patients are either under NUC treatment or not); 4. Adults ≥20 years of age; patients who are over 70 years of age must be in generally good health depending upon the Investigator's judgment; 5. Laboratory test results before study entry: WBC ≥ 3,000/mm3; ANC ≥ 1,500/mm3; Platelet ≥ 90,000/mm3; Hemoglobin ≥ 10g/dL; e-GFR ≥ 60mL/min; 6. ECG without clinically significant abnormalities before study entry; 7. Be able to attend all scheduled visits and to comply with all study procedures; 8. Patients with anti-HDV (+) can be enrolled; 9. Patients with fibrosis stage \< F3 can be enrolled; 10. Willing to provide written informed consent; Exclusion Criteria: 1. Clinically significant illness or surgery that might interfere with study participation; 2. Clinically significant vital sign abnormalities or fever \[body temperature \>38℃\]); 3. History of significant alcohol or drug abuse within 6 months prior to the screening visit (alcohol consumption of more than 14 units of alcohol per week \[1 Unit = 150 mL of wine, 360 mL of beer, or 45 mL of 40% alcohol\]) or refusal to abstain from alcohol or illicit drugs throughout the study; 4. Any history or presence of poorly controlled or clinically significant medical conditions that are not suitable to receive interferon-based treatment, at the discretion of the investigator: major psychiatric (including but not limited to those with severe depression, severe bi-polar disorder, schizophrenia, suicidal ideation or history of suicidal attempt), neurological, cardiovascular (i.e. uncontrolled hypertension, congestive heart failure (≥ NYHA class 2), serious cardiac arrhythmia, significant coronary artery stenosis, unstable angina) or recent stroke or myocardial infarction), pulmonary, hematologic, immunologic, autoimmune diseases, thyroid or other endocrine diseases, metabolic (e.g. diabetes mellitus with HbA1C \> 8.0%) or other uncontrolled systemic disease, coagulation disorders or blood dyscrasias; 5. Pregnant patient, female patient or the spouse of male patient, with child-bearing potential who is unwilling or unable to practice adequate contraception, defined as vasectomy in men, tubal ligation in women, or use of condoms and spermicides, or birth control pills, or intrauterine devices throughout the study; 6. History of severe allergic or hypersensitivity reactions, e.g. hypersensitivity to the active substance or to any of the excipients of Ropeginterferon alfa-2b (P1101), bronchospasm, angioedema, asthma, or anaphylaxis; 7. Therapy with any systemic anti-viral treatment, anti-neoplastic, or immunomodulatory treatment (including supraphysiologic doses of steroids and radiation) within 1 month (3 months for those with long elimination half-lives) prior to the first dose of study drug; 8. A depot injection or an implant of any drug within 3 months prior to administration of study medication, other than contraception or hyaluronic acid injections in joints for osteoarthritis; 9. Body organ transplant or taking immunosuppressant; 10. Use investigational drug of other clinical trials within 4 weeks prior to the first dose of the study drug; 11. History of malignancy diagnosed or treated within 5 years prior to screening (except for localized treatment of squamous or non-invasive basal cell skin cancers; cervical carcinoma in situ); 12. History of opportunistic infection (e.g., invasive candidiasis or pneumocystis pneumonia); 13. Serious localized infection (e.g., cellulitis, abscess) or systemic and life-threatening infection (e.g., septicemia) within 3 months prior to screening; 14. Clinically significant medical conditions known to interfere absorption, distribution, metabolism or excretion of the study drugs; 15. Decompensated liver disease, which includes but not limited to the following: total bilirubin≥2 mg/dL (except in Gilbert syndrome), direct bilirubin ≥2X ULN, albumin level \< 3.5 g/dL, INR ≥1.5; clinical evidence of ascites, liver decompensation, hepatic encephalopathy, oesophageal varices or cirrhosis as identified by ultrasound or any other examination before study entry; 16. Significant steatohepatitis by ultrasound or other examination at the discretion of investigator; 17. Other form of significant chronic liver diseases, except those mentioned above (e.g. HBV, HDV); 18. Significant or major fundoscopic findings at screening including but not limited to retinal exudates, hemorrhage, detachment, neovascularization, papilledema, optic atrophy, microaneurysms and macular changes; 19. Positive for anti-HIV or anti-HCV; 20. Prior therapy with anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CD137, anti-CTLA-4 antibody, or any other antibody or drug specifically targeting T-cell co-stimulation or immune checkpoint pathway; 21. Any contraindication to receiving anti-PD-1 antibody (e.g. active or a history of life-threatening autoimmune conditions, corticosteroids treatment required) or hypersensitivity to the constituents of anti-PD-1 antibody; 22. Patients under monotherapy by telbivudine or any other combination therapy with telbivudine.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Chang Gung Memorial Hospital, Linkou

    Taoyuan City, Taiwan

  • Chia-Yi Christian Hospital

    Chiayi City, Taiwan

  • National Taiwan University Hospital

    Taipei, Taiwan

  • Taipei Medical University Hospital

    Taipei, Taiwan

  • Taipei Veterans General Hospital

    Taipei, Taiwan

More trials for these conditions

Other studies related to the condition(s) this trial covers.