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Hepatitis b drug holiday: can stopping treatment lead to a cure?

NCT ID NCT04431245

Knowledge-focused Sponsor: The University of Hong Kong Source: ClinicalTrials.gov ↗

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 This study
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study follows 54 people with chronic hepatitis B who stop taking their antiviral medication after at least three years. Researchers will closely monitor their immune system and virus levels to see what happens during a flare. The goal is to learn whether a controlled flare might help the body fight off the virus for good.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could help doctors understand when it might be safe to stop antiviral therapy for chronic hepatitis B, potentially reducing long-term medication use.
What could go wrong
This is an observational study with only 54 participants. It does not test a new treatment, and stopping antivirals carries a risk of serious liver flare. Results may not apply to all patients.

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.

Participants

About 54 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2021

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Who is studied

HBeAg-negative non-cirrhotic CHB patients on long-term NA ≥3 years will be identified. Only those who have undetectable serum HBV DNA by the conventional assay (Cobas Taqman, Roche Diagnostics, Branchburg, NJ) which has a lower limit of detection (LLOD) of 10 IU/mL will be recruited. CHB patients were treated with potent oral NA (i.e. tenofovir or entecavir). All recruited patients will have written informed consent for participation of study. Patients with HCC, cirrhosis, history of liver transplantation, or on immunosuppressants, will be excluded.

Ages

18 years and older

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: * HBeAg-negative * non-cirrhotic * on long-term NA ≥3 years (entecavir or tenofovir) * undetectable serum HBV DNA Exclusion Criteria: * HCC, cirrhosis, history of liver transplantation, or on immunosuppressants,

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Conditions

The condition(s) this trial relates to.

chronic hepatitis B virus infection hepatitis B virus infection

As listed by the trial registrant

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

Chronic hepatitis B

Contacts and locations

Locations

  • Man Fung Yuen

    Hong Kong, Please Select One ..., Hong Kong

More trials for these conditions

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