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Active Not RecruitingPhase 3NCT04308759

An Innovative Conversational Agent (Quitbot) for Smoking Cessation

This phase III trial compares two remote digital smoking cessation programs to see how well they work for quitting smoking.

Lead sponsor: Fred Hutchinson Cancer Center•1 U.S. locations•View source on ClinicalTrials.gov

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Sponsors

Lead Sponsor

Fred Hutchinson Cancer Center

Collaborators

National Cancer Institute (NCI)

OUTLINE: Participants are randomized to 1 of 2 groups. Both groups receive access to a 42-day quit smoking program. GROUP I: Experimental program, for 42 days to support quitting smoking. After the completion of study, patients are followed up at 3, 6, and 12 months. GROUP II: Control program, for 42 days to support quitting smoking. After the completion of study, patients are followed up at 3, 6, and 12 months.

Age

18 - No limit years

Sex

ALL

Healthy Volunteers

Yes

Inclusion Criteria

•Age 18 or older
•Smokes at least one cigarette a day for the past 12 months
•Wants to quit cigarette smoking within the next 30 days (consistent with text messaging intervention trials)
•If concurrently using any other nicotine or tobacco products, wants to quit using them within the next 30 days
•Interested in learning skills to quit smoking
•Willing to be randomly assigned to either intervention
•Resides in United States (US) and will continue to reside in the US for the next 12 months
•Has at least daily access to their own smartphone
•Has text messaging on their smartphone and knows how to download a smartphone application
•Willing and able to read in English, and
•Not using other smoking cessation interventions (This eligibility requirement helps ensure results are due to the treatments we recommend rather than those that participants are doing on their own.)

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Data from ClinicalTrials.govLast updated on ClinicalTrials.gov: May 28, 2025Terms

Trial snapshot

StatusACTIVE_NOT_RECRUITING

PhasePHASE3

Enrollment1,647

Start dateJul 2022

Last updatedMay 28, 2025

Condition

Cigarette Smoking-Related Carcinoma

Locations shown

Fred Hutch/University of Washington Cancer Consortium

Seattle, Washington

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Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: May 28, 2025Data synced to Clareo: May 17, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.

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