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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Telephone quitline Clear all
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Helpers Program On-line Training on Smoking Relapse and Social Networks

NCT05641974
View directory record Official record
Conditions
Smoking, Cigarette Smoking
Interventions
Helpers Stay Quit Training
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 99 Years
Enrollment
940 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 23, 2026, 4:33 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Beyond the Lung Cancer Diagnosis: Leveraging the Oncology Clinic Setting for Actively Smoking Family Members

NCT03966807
View directory record Official record
Conditions
Lung Cancer
Interventions
Digital-based support, Traditional-based support + Nicotine replacement therapy (NRT)
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 17, 2024 · Synced Sep 23, 2026, 4:33 AM EDT
Active, not recruiting Not applicable Interventional

Comparing an Opt-out to an opt-in Approach for Smoking Cessation in VA Primary Care Clinics

NCT03477435
View directory record Official record
Conditions
Tobacco Use
Interventions
Staff training and academic detailing
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
Not listed
Enrollment
1,365 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional

Project HEALS (Helping and Empowering pAtients for Living a Life Smoke-free

NCT05362318
View directory record Official record
Conditions
Smoking, Tobacco Use, Lung Cancer
Interventions
Nicotine patch and lozenges, Telephone counseling sessions, Access to a web-based video, Florida Tobacco Quitline
Drug · Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Phase 3 Interventional Results available

Telephone Counseling and the Distribution of Nicotine Patches to Smokers

NCT00851357
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine Patch, Telephone Counseling, Placebo, Self-Help Materials
Drug · Behavioral · Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
4,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2020 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional

Comparative Effectiveness of Two Tobacco Cessation Interventions for Employees of Partners HealthCare, Inc.

NCT02601521
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Disorder
Interventions
Internal tobacco coach, External tobacco coach
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 23, 2021 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Phase 4 Interventional Results available

Effectiveness of a Smoking Cessation Algorithm Integrated Into HIV Primary Care

NCT03670316
View directory record Official record
Conditions
HIV, AIDS, Smoking Cessation
Interventions
Algorithm Treatment, Quitline only
Drug · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
371 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Lombardi Comprehensive Cancer Center/Legacy Pilot Study to Reduce Adverse Smoking Outcomes in the Context of Lung Cancer Screening

NCT02267096
View directory record Official record
Conditions
Smoking, Lung Cancer
Interventions
Telephone Counseling, Minimal Treatment
Behavioral
Lead sponsor
Georgetown University
Other
Eligibility
55 Years to 80 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Burlington, Massachusetts • Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Helping Poor Smokers Quit

NCT03194958
View directory record Official record
Conditions
Smoking Cessation, Smoking, Tobacco, Smoking, Cigarette, Smoking, Pipe, Smoking (Tobacco) Addiction, Smoking, Tobacco Use, Tobacco Dependence, Tobacco Use Cessation, Tobacco Smoking, Tobacco; Use, Rehabilitation, Nicotine Dependence, Nicotine Use Disorder, Nicotine Dependence, Cigarettes, Nicotine Dependence Tobacco Product
Interventions
Specialized Quitline, Basic Needs Navigator
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
1,944 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 25, 2023 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Phase 4 Interventional Results available

Tobacco Treatment Comparison for Cancer Care

NCT06218823
View directory record Official record
Conditions
Smoking Cessation, Cancer
Interventions
Transdermal Nicotine Patch, Standard Telephone Counseling, Varenicline, Cancer-Targeted Telephone Counseling, Mailed Information about Standard Care Resources
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 26, 2025 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Connecting Alaska Native People to Quit Smoking

NCT03645941
View directory record Official record
Conditions
Tobacco Use, Tobacco Smoking, Tobacco Use Cessation, Smoking Cessation, Smoking, Cigarette, Smoking, Tobacco, Smoking
Interventions
Facebook Group
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
19 Years and older
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 7, 2022 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional

A Mobile Intervention to Promote Cessation in HIV-infected Smokers

NCT02432482
View directory record Official record
Conditions
Tobacco Use, HIV-1-infection
Interventions
mobile Positively Smoke Free (mPSF), Standard care
Behavioral
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 30, 2023 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparative Effectiveness of Adding Weight Control to Smoking Cessation Quitlines

NCT01867983
View directory record Official record
Conditions
Cigarette Smoking, Overweight, Obesity
Interventions
Weight gain prevention and smoking cessation, Smoking cessation
Behavioral
Lead sponsor
Consumer Wellness Solutions
Industry
Eligibility
18 Years and older
Enrollment
2,540 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Phase 1 Interventional

Enhanced Quitline Intervention in Smoking Cessation for Patients With Non-Metastatic Lung Cancer

NCT01457469
View directory record Official record
Conditions
Limited Stage Small Cell Lung Cancer, Recurrent Small Cell Lung Cancer, Stage IA Non-small Cell Lung Cancer, Stage IB Non-small Cell Lung Cancer, Stage IIA Non-small Cell Lung Cancer, Stage IIB Non-small Cell Lung Cancer, Stage IIIA Non-small Cell Lung Cancer, Stage IIIB Non-small Cell Lung Cancer, Tobacco Use Disorder
Interventions
questionnaire administration, quality-of-life assessment, counseling intervention, internet-based intervention, telephone-based intervention, educational intervention, nicotine replacement therapy
Other · Procedure · Behavioral + 1 more
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Sep 23, 2026, 4:33 AM EDT
Recruiting Phase 3 Interventional

V+PSF-M for Tobacco Cessation in HIV Care in India

NCT05786547
View directory record Official record
Conditions
Human Immunodeficiency Virus, Smoking Cessation, Smoking, Tobacco
Interventions
Varenicline, Positively Smoke Free Mobile (PSF-M), Standard Care
Drug · Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 14, 2025 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Phase 4 Interventional Results available

Health Systems Reach Interventions Project

NCT04199117
View directory record Official record
Conditions
Smoking, Cigarette, Smoking Cessation
Interventions
Varenicline, Combination nicotine patch and nicotine mini-lozenge treatment, Monetary incentives for initiating treatment, Automated tailored outreach, Care management, Wisconsin Tobacco Quit Line referral, Primary care provider referral, Untailored outreach, Multiple smoking cessation coaching calls
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional Results available

Telephone Care Coordination for Smokers in VA Mental Health Clinics

NCT00724308
View directory record Official record
Conditions
Smoking
Interventions
Telephone Care Coordination, Telephone Care Coordination with state Quitline
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
577 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 16, 2020 · Synced Sep 23, 2026, 4:33 AM EDT
Completed No phase listed Observational

Tobacco-Focused Patient Navigation to Address Barriers to Utilization of Community-Based Smoking Cessation Services in Primary Care

NCT01678118
View directory record Official record
Conditions
Minority Smokers
Interventions
Patient Navigator
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2021
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Phase 3 Interventional

Evaluating a Telemedicine Smoking Cessation Program in Rural Primary Care Practices

NCT00843505
View directory record Official record
Conditions
Smoking
Interventions
Telemedicine Smoking Cessation Program, Telephone Quitline Smoking Cessation Program
Behavioral
Lead sponsor
Kimber Richter, PhD, MPH, MA
Other
Eligibility
18 Years and older
Enrollment
566 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 4, 2012 · Synced Sep 23, 2026, 4:33 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Pilot Study of the Learn, Connect, and Quit Mobile Application

NCT03978455
View directory record Official record
Conditions
Smoking, Smoking Cessation
Interventions
Learn, Connect, and Quit Mobile Application
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 10, 2020 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional

CORE: CO Monitoring for Reach and Efficacy in Tobacco Treatment for Cancer Patients

NCT04675515
View directory record Official record
Conditions
Tobacco Use, Cancer
Interventions
Intensive Tobacco Treatment
Behavioral
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jul 13, 2025 · Synced Sep 23, 2026, 4:33 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Ask Advise Connect (AAC) Harris Heath CPRIT

NCT01788787
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Quitline-Delivered Proactive Telephone Counseling, Follow-Up Phone Call, Smoking Cessation Training, Qualitative Interviews Concerning the Implementation of AAC
Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
5,212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2049
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 27, 2019 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Improving the Reach & Effectiveness of Smoking Cessation Services Targeted to Veterans Living With HIV

NCT04505371
View directory record Official record
Conditions
HIV Infections, Smoking, Smoking Cessation
Interventions
Wellness Intervention for Smokers with HIV
Behavioral
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years and older
Enrollment
235 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 23, 2026, 4:33 AM EDT
Completed Not applicable Interventional Results available

Study Two on the Effectiveness of Mindfulness Training for Smokers

NCT01299909
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Integrated Training for Smokers, Mindfulness Training for Smokers, Quitline
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 26, 2019 · Synced Sep 23, 2026, 4:33 AM EDT