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Why do young adults mix tobacco and cannabis? new study aims to find out

NCT ID NCT07439471

Knowledge-focused Sponsor: Roswell Park Cancer Institute 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Aug 18, 2026 · Updated 2 times

Summary

This study interviews 40 young adults aged 18-30 who use both tobacco (cigarettes or vaping) and cannabis at least weekly. Researchers want to learn how and why people start, increase, and keep using both substances together. The goal is to better understand these behaviors, not to test a treatment.

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 40 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Mar 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.

Who is studied

Adult cannabis users who also use cigarettes or nicotine vaping products.

Ages

18 to 30 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: * \* Adults aged 18 to 30 years old. * Currently living in the Roswell Park catchment area. * Able to speak, read, and write in English. * Currently consuming cannabis at least weekly. * Group 1: currently using cigarettes daily and not using nicotine vaping products more than one day per week. * Group 2: currently using nicotine vaping products daily and not using cigarettes more than one day per week. Exclusion Criteria: * \* Unwilling or unable to follow protocol requirements. * Individuals under the age of 18 or over 30. * Individuals not meeting product consumption criteria for inclusion items 3 and 4.

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Conditions

The condition(s) this trial relates to.

squamous cell lung carcinoma

As listed by the trial registrant

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

Cigarette smoking-related carcinoma

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

  • Roswell Park Cancer Institute

    RECRUITING

    Buffalo, New York, 14263, United States

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