NCT06697496

Brief Summary

This clinical trial develops a chatbot smartphone application (app), QuitBot, and text messaging to help American Indians (AI) and Alaska Natives (AN) to quit smoking commercial tobacco (smoking cessation), and evaluates two remote smoking cessation programs to see how well they work for helping AI/AN people quit smoking commercial tobacco. AI/AN populations have one of the highest rates of commercial cigarette smoking of any racial and ethnic group in the United States (US). They also have a higher rate of developing smoking-related cancer but are less likely to quit smoking. The two programs are designed to provide personalized support in setting a smoking cessation goal, tasks to reach the smoking cessation goal, and motivation to remain smoke-free. This may help to keep participants engaged and support them in their quit efforts, and may improve smoking cessation among AI and AN.

Trial Health

63
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
772

participants targeted

Target at P75+ for not_applicable

Timeline
54mo left

Started Jun 2026

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

November 18, 2024

Completed
2 days until next milestone

First Posted

Study publicly available on registry

November 20, 2024

Completed
1.5 years until next milestone

Study Start

First participant enrolled

June 1, 2026

Expected
3.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 31, 2029

1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

October 31, 2030

Last Updated

February 19, 2026

Status Verified

February 1, 2026

Enrollment Period

3.4 years

First QC Date

November 18, 2024

Last Update Submit

February 17, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • 30-day point prevalence abstinence (PPA)

    Will use a logistic regression model and standard smoking cessation trial intent-to-treat analysis, with all missing outcomes will be coded as smoking. The model will adjust for stratification factors and baseline factors that are significantly related to the outcome. Sensitivity analyses will include: (1) multiple imputation of missing outcomes, (2) complete case analysis, and (3) carbon monoxide (CO)-verified results adjusted for use of other combustible nicotine-containing tobacco products at the 12-month follow-up-in order to differentiate them from use of cigarettes at 12 months.

    At 12-months post-randomization

Secondary Outcomes (5)

  • 30-day PPA

    At 3- and 6- months post-randomization

  • Measures of bond between user and conversational chatbot

    At 3- and 6-months post-randomization

  • Agreement on goals of treatment

    At 3- and 6-months post-randomization

  • Agreement on tasks of treatment

    At 3- and 6-months post-randomization

  • User's sense that QuitBot understands their needs

    At 3- and 6-months post-randomization

Study Arms (2)

Arm I (QuitBot chatbot)

EXPERIMENTAL

Participants participate in the QuitBot program which involves chatbot messages over 42 days. Therapy description withheld to protect the integrity of the study.

Device: QuitBot Smoking Cessation Chatbot ProgramOther: Survey AdministrationOther: InterviewProcedure: Carbon Monoxide Measurement

Arm II (QuitBot texting)

ACTIVE COMPARATOR

Participants participate in the QuitBot program which involves text messages over 42 days. Therapy description withheld to protect the integrity of the study.

Device: QuitBot Smoking Cessation Text Messaging ProgramOther: Survey AdministrationProcedure: Carbon Monoxide Measurement

Interventions

Participate in Quitbot texting program

Also known as: QuitBot texting program
Arm II (QuitBot texting)

Ancillary studies

Arm I (QuitBot chatbot)

Ancillary studies

Also known as: CMONOX
Arm I (QuitBot chatbot)Arm II (QuitBot texting)

Participate in Quitbot chatbot program

Also known as: QuitBot chatbot program
Arm I (QuitBot chatbot)

Ancillary studies

Arm I (QuitBot chatbot)Arm II (QuitBot texting)

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Self-identifying as American Indian or Alaska Native, either alone or in combination with other races
  • Age 18 and older
  • Smoking combustible cigarettes daily in the past year
  • Interest in quitting smoking
  • Interest in learning skills to quit smoking
  • Willing to be randomly assigned
  • Have daily access to their own Android or iPhone smartphone
  • Ability to download a smartphone app
  • Ability to read English
  • Not currently (i.e., within past 30 days) using other smoking cessation interventions
  • No prior participation in our studies
  • No prior use of SFT
  • No household or family member participating
  • US residency for the next twelve months
  • Willingness to complete follow-up assessments at the 3-, 6-, and 12-month follow-ups
  • +1 more criteria

You may not qualify if:

  • Pregnant or breastfeeding

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Fred Hutch/University of Washington Cancer Consortium

Seattle, Washington, 98109, United States

Location

MeSH Terms

Interventions

Interviews as TopicCarbon Monoxide

Intervention Hierarchy (Ancestors)

Data CollectionEpidemiologic MethodsInvestigative TechniquesHealth Care Evaluation MechanismsQuality of Health CareHealth Care Quality, Access, and EvaluationPublic HealthEnvironment and Public HealthCarbon Compounds, InorganicInorganic ChemicalsGasesOxidesOxygen Compounds

Study Officials

  • Jonathan Bricker, PhD

    Fred Hutch/University of Washington Cancer Consortium

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Jonathan Bricker, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Random assignments will be concealed from participants and researchers throughout the trial. Follow-up data will be collected by survey research unit that will be blind to random assignment.
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 18, 2024

First Posted

November 20, 2024

Study Start (Estimated)

June 1, 2026

Primary Completion (Estimated)

October 31, 2029

Study Completion (Estimated)

October 31, 2030

Last Updated

February 19, 2026

Record last verified: 2026-02

Data Sharing

IPD Sharing
Will share

The trial results data will be published on ClinicalTrials.gov. The de-identified scientific data will be made available as public use data to the research community in openICPSR. No PII or PHI data will be shared or available for secondary use.

Shared Documents
STUDY PROTOCOL, SAP, ICF
Time Frame
The de-identified scientific data will be made available to other users no later than the time of publication of the primary outcomes, or at the end of the performance period, whichever comes first. The de-identified data deposited in openICPSR will be available to the research community in perpetuity.
Access Criteria
Members of the research community using this data must register with ICPSR and agree to the Terms of Use, which include limiting data use to scientific research and aggregate statistical reporting, prohibiting attempts to identify study participants, requiring immediate reporting of any disclosure of participant identity, and requiring users agree not to share or redistribute any data downloads.

Locations