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Hidden hepatitis d: nationwide survey maps its reach in thailand

NCT ID NCT05350865

Knowledge-focused Sponsor: The HIV Netherlands Australia Thailand Research Collaboration 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 17, 2026 · Last updated Sep 18, 2026 · Updated 1 time

Summary

Researchers are surveying people in Thailand who have chronic hepatitis B to find out how many also carry hepatitis D, a virus that can make liver disease worse. The study focuses on groups at higher risk, including people who inject drugs, men who have sex with men, prisoners, and those with HIV or cirrhosis. About 3,300 adults will give blood samples. The goal is to learn how common hepatitis D is and what factors predict infection, which could guide future screening and care.

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 the survey finds high rates of hepatitis D, health officials could design screening and treatment programs for the groups most affected.
What could go wrong
The survey only measures how many people have the virus; it does not test any treatment. The results may not apply to other countries or populations.

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

3,296 people

The number who actually took part.

Started

Jan 2023

Finished

May 2025

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

Chronically-infected with HBV, as defined by: Positive Hepatitis B surface antigen HBsAg) or HBV DNA result with a subsequent positive HBsAg or HBV DNA result at least 6 months after first positive result

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: 1. Male or female, aged 18 years and older 2. Chronically-infected with HBV, as defined by: Positive Hepatitis B surface antigen HBsAg) or HBV DNA result with a subsequent positive HBsAg or HBV DNA result at least 6 months after first positive result 3. Provide signed and dated informed consent form. Exclusion Criteria: Non chronic HBV

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Conditions

The condition(s) this trial relates to.

chronic hepatitis B virus infection Fibrosis hepatitis D virus infection

As listed by the trial registrant

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

HDV

Contacts and locations

Locations

  • HIV-NAT, Thai Red Cross - AIDS Research Centre

    Bangkok, Bangkok, 10330, Thailand

  • King memorial Chulalongkorn hospital

    Bangkok, Bangkok, 10330, Thailand

  • Siriraj Hospital, Mahidol University

    Bangkok, Bangkok, Thailand

  • Taksin Hospital

    Bangkok, Bangkok, Thailand

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