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AI chatbot and counseling aim to keep young quitters Smoke-Free

NCT ID NCT07178899

Symptom relief 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 pilot study tests a new program for young adults (25 or under) in Hong Kong who recently quit smoking. The program combines personalized counseling with an AI chatbot that sends supportive messages for 30 days. Researchers want to see if this approach is practical and acceptable, and whether it helps prevent relapse better than standard advice. Only 100 people will take part, so results are preliminary.

What this could mean

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

Active substance
typology-based counseling and AI chatbot
What this could lead to
If successful, this could provide a practical, scalable way to help young people avoid smoking relapse after quitting.
What could go wrong
This is a small pilot study (100 participants) testing feasibility, not yet proven to work. The intervention is complex and may not be more effective than standard advice.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 100 people

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

Expected to start

Jun 2026

An estimate. Start dates often move.

Expected to finish

Jun 2027

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.

Ages

Up to 25 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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 (Phase 1): * Hong Kong citizens * Have ever habitually used conventional cigarettes in the past year * Not using cigarettes for the past 7-30 days * Aged 25 or below (parental consent is required for participants under 18 years old) * No barriers in communicating in Cantonese and reading and writing Chinese * Quit smoking without using cessation services Inclusion Criteria (Phase 3): * Hong Kong citizens * Have ever habitually used conventional cigarettes in the past year * Received at least 4 weeks of smoking cessation service before enrolling into the study * abstained from tobacco use for 7 days without concurrent use of any cessation services * Aged 25 or below (parental consent is required for participants under 18 years old) * No barriers in communicating in Cantonese and reading and writing Chinese Exclusion Criteria (Phase 1 \& 3): * Have unstable physical or psychological conditions as advised by doctors or counsellors * Are users of illicit drugs (e.g., heroin, marijuana, ketamine, etc.) * Have become pregnant in the past two months * unable to communicate in Cantonese and read Chinese Inclusion Criteria (Phase 2) (for SC counsellors) : * SC counsellors from local SC clinics under HKU Youth Quit Line, Tung Wah Group of Hospitals Integrated Center on Smoking Cessation and United Christian Nethersole Community Health Service

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Conditions

The condition(s) this trial relates to.

Behavior, Addictive nicotine dependence Smoking Smoking Cessation

As listed by the trial registrant

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

RCT Smoking (tobacco) addiction Young adult

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • LKS Faculty of Medicine

    Hong Kong, Hong Kong

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