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Can a phone app and a CT scan help smokers kick the habit?

NCT ID NCT07331519

Disease control Sponsor: Oulu University Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests different ways to help smokers quit, including a smartphone app, written materials, and low-dose CT scans to screen for lung cancer. Researchers will enroll 1,200 smokers aged 50-74 and compare how many people successfully quit in each group. The goal is to see if combining lung cancer screening with smoking-cessation support works better than either approach alone.

What this could mean

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

Active substance
Smartphone application for smoking cessation, low-dose computed tomography, and written materials
What this could lead to
If successful, this could show that combining lung cancer screening with digital smoking-cessation tools helps more people quit smoking and catch cancer earlier.
What could go wrong
This is a behavioral and screening study, not a drug trial. Results depend on participant motivation, and the CT screening may find harmless nodules that lead to unnecessary worry or procedures.

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 1,200 people

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

Started

Feb 2026

Expected to finish

Aug 2036

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

50 to 74 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. Able to provide written informed consent 2. Age between 50-74 3. Smoked ≥ 15 cigarettes/day for ≥ 25 years or smoked ≥ 10 cigarettes/day for ≥ 30 years and are active smokers (smoking during the last two weeks) 4. Access to a smartphone (iPhone or Android) Exclusion Criteria: 1. Current or past melanoma, lung, renal or breast cancer 2. A chest CT examination less than one year before inclusion 3. Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial 4. No access to a smartphone (iPhone or Android) 5. Participant is unwilling or unable to comply with treatment and trial instructions 6. Any condition that study investigators consider an impediment to safe trial participation

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Conditions

The condition(s) this trial relates to.

lung neoplasm Smoking Cessation

As listed by the trial registrant

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

Smoking cessation

How to take part

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

  1. The places running it

    5 sites. 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

  • Helsinki University Hospital

    NOT_YET_RECRUITING

    Helsinki, Finland

  • Oulu University Hospital

    RECRUITING

    Oulu, Finland

  • Tampere University Hospital

    NOT_YET_RECRUITING

    Tampere, Finland

  • Turku University Hospital

    NOT_YET_RECRUITING

    Turku, Finland

  • Vaasa Central Hospital

    NOT_YET_RECRUITING

    Vaasa, Finland

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