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ClinicalTrials.gov public records Last synced Oct 17, 2026, 5:09 PM EDT

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Showing 1–24 of 87 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Former Smokers Clear all
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

Centralized Lung Cancer EARly Detection Among Smokers (CLEAR Study)

NCT04200534
View directory record Official record
Conditions
Smoking, Lung Cancer
Interventions
Best Practice, Nicotine Patch, Quality-of-Life Assessment, Questionnaire Administration, Tobacco Cessation Counseling
Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
55 Years to 77 Years
Enrollment
358 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
3
States / cities
Galveston, Texas • Houston, Texas • Tyler, Texas
Source: ClinicalTrials.gov public record
Updated Aug 22, 2025 · Synced Oct 17, 2026, 5:09 PM EDT
Completed No phase listed Observational

Evaluation of Cardiovascular Effects of Smoking Cessation in HIV Patients

NCT00918073
View directory record Official record
Conditions
HIV Infections, Smokers
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
16 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 7, 2013 · Synced Oct 17, 2026, 5:09 PM EDT
Completed No phase listed Observational

Vanguard Study for Head and Neck Cancer or Non-Small Cell Lung Cancer (NSCLC) Patients

NCT00352391
View directory record Official record
Conditions
Head and Neck Cancer, Lung Cancer
Interventions
Assessments
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2016
U.S. locations
3
States / cities
Fort Gordon, Georgia • Johnstown, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 3, 2016 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 2 Interventional Results available

Erlotinib Hydrochloride With or Without Carboplatin and Paclitaxel in Treating Patients With Stage III-IV Non-small Cell Lung Cancer

NCT00126581
View directory record Official record
Conditions
Lung Adenocarcinoma, Lung Adenosquamous Carcinoma, Malignant Pericardial Effusion, Malignant Pleural Effusion, Minimally Invasive Lung Adenocarcinoma, Stage IIIB Lung Non-Small Cell Cancer AJCC v7, Stage IV Lung Non-Small Cell Cancer AJCC v7
Interventions
Carboplatin, Erlotinib, Erlotinib Hydrochloride, Paclitaxel
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2017
U.S. locations
96
States / cities
Castro Valley, California • Emeryville, California • Fremont, California + 68 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2019 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Not applicable Interventional Results available

Implementation of Smoking Cessation Within NCI Community Oncology Research Program (NCORP) Sites

NCT03291587
View directory record Official record
Conditions
Smoking Cessation
Interventions
Personnel Training and Coaching Calls
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
1,094 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
49
States / cities
Newark, Delaware • Augusta, Georgia • Savannah, Georgia + 36 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2022 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Interventions for Smoking Among Persons in Recovery

NCT00714896
View directory record Official record
Conditions
Smoking Cessation
Interventions
Stepped-Care, Control
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Walnut Creek, California
Source: ClinicalTrials.gov public record
Updated May 29, 2013 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Not applicable Interventional Results available

Efficacy of a Smoke-Free Homes Intervention

NCT04547686
View directory record Official record
Conditions
Cessation, Smoking
Interventions
Smoke-Free Homes Intervention, Quitline
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
916 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 4 Interventional Results available

A Multi-National Study To Assess How Effective And Safe The Smoking Cessation Medicine Varenicline Is In Smokers Who Have Already Tried Varenicline In The Past As A Prescription Medicine From Their Usual Healthcare Provider

NCT01244061
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
498 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
8
States / cities
Los Angeles, California • DeLand, Florida • Lexington, Kentucky + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2014 · Synced Oct 17, 2026, 5:09 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

EQQUAL-NM for the Promotion of Smoking Cessation in Sexual and Gender Minority Young Adults in New Mexico

NCT06386432
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Smartphone App-delivered Smoking Cessation Intervention, Health Promotion and Education, Biospecimen Collection, Questionnaire Administration
Behavioral · Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years to 30 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 8, 2025 · Synced Oct 17, 2026, 5:09 PM EDT
Completed No phase listed Observational

Couples Dynamics and Smoking Cessation

NCT03885336
View directory record Official record
Conditions
Smoking, Smoking Cessation, Cessation, Smoking, Smoking Behaviors, Smoking, Cigarette
Interventions
No Interventions
Other
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 65 Years
Enrollment
212 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 20, 2023 · Synced Oct 17, 2026, 5:09 PM 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 31, 2026 · Synced Oct 17, 2026, 5:09 PM EDT
Completed No phase listed Observational

CT Scans in Screening for Lung Cancer in Current and Former Smokers

NCT00625690
View directory record Official record
Conditions
Lung Cancer
Interventions
questionnaire administration, computed tomography, evaluation of cancer risk factors, study of high risk factors
Other · Procedure
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 120 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 26, 2023 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 2 Interventional

Celecoxib in Preventing Lung Cancer in Former Heavy Smokers

NCT00055978
View directory record Official record
Conditions
Lung Cancer
Interventions
celecoxib, placebo
Drug · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
45 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2009
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 20, 2011 · Synced Oct 17, 2026, 5:09 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

Smoking Cessation Intervention During Low Dose CT (LDCT) Screening for Lung Cancer

NCT03059940
View directory record Official record
Conditions
Smoking Cessation
Interventions
Questionnaires, Low Dose Computed Tomography Scan, Shared Decision Making + Video, Cessation Counseling, Quitline, Pharmacotherapy Discussion, Nicotine Patch, Anti-Smoking Drug, Tobacco Treatment Program, Carbon Monoxide (CO) Level Test
Behavioral · Procedure · Other + 1 more
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
50 Years and older
Enrollment
630 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Electronic Cigarette Use on the Lungs

NCT02596685
View directory record Official record
Conditions
Current Smoker, Never Smoker, Tobacco Use Disorder, Former Smoker, E-cig User
Interventions
Bronchoscopy, Electronic Cigarette, Laboratory Biomarker Analysis, Questionnaire Administration
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 45 Years
Enrollment
142 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Imaging Regional Lung Defect Severity

NCT01640288
View directory record Official record
Conditions
COPD
Interventions
Perfluorinated Gas/Oxygen Mixture, High Resolution CT of the Chest
Drug · Other
Lead sponsor
Hal C Charles
Other
Eligibility
18 Years and older
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 17, 2020 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 3 Interventional Results available

RETHINC: REdefining THerapy In Early COPD for the Pulmonary Trials Cooperative

NCT02867761
View directory record Official record
Conditions
COPD (Chronic Obstructive Pulmonary Disease)
Interventions
Indacaterol/Glycopyrrolate, Placebo
Drug
Lead sponsor
University of Michigan
Other
Eligibility
40 Years to 80 Years
Enrollment
780 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2023 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 3 Interventional

A 52-Week Multicenter Study Evaluating the Safety and Efficacy of Varenicline for the Maintenance of Smoking Cessation

NCT00143286
View directory record Official record
Conditions
Smoking Cessation
Interventions
varenicline (CP-526,555)
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
6
States / cities
Santa Ana, California • West Palm Beach, Florida • Lexington, Kentucky + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2007 · Synced Oct 17, 2026, 5:09 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Home-Based Respiratory Muscle Training and Aerobic Exercise Programs to Improve Lung Health in Current and Former Cigarette Smokers

NCT07553819
View directory record Official record
Conditions
Lung Carcinoma
Interventions
Accelerometry, Aerobic Exercise, Biospecimen Collection, Educational Intervention, Electronic Health Record Review, Physical Performance Testing, Respiratory Muscle Training, Supportive Care, Survey Administration
Procedure · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
50 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 17, 2026, 5:09 PM EDT
Recruiting Not applicable Interventional

Pain and Smoking Study 2.0: A Randomized Clinical Trial of Smoking Cessation Among Veterans With Chronic Pain

NCT06442514
View directory record Official record
Conditions
Smoking, Pain, Smoking Cessation
Interventions
PASS2, Treatment as Usual
Behavioral · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 1 Interventional

Celecoxib and Erlotinib in Treating Former Smokers With Stage IIIB or Stage IV Non-Small Cell Lung Cancer

NCT00088959
View directory record Official record
Conditions
Recurrent Non-small Cell Lung Cancer, Stage IIIB Non-small Cell Lung Cancer, Stage IV Non-small Cell Lung Cancer
Interventions
erlotinib hydrochloride, celecoxib, laboratory biomarker analysis
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2010
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 10, 2014 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 2 Interventional Results available

Sulindac in Preventing Lung Cancer in Current or Former Smokers With Bronchial Dysplasia

NCT00368927
View directory record Official record
Conditions
Precancerous Condition, Stage I Non-small Cell Lung Cancer, Tobacco Use Disorder
Interventions
sulindac, placebo
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
40 Years to 79 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
5
States / cities
Scottsdale, Arizona • Tampa, Florida • Burlington, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated May 23, 2014 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 1 Interventional

Smoking Cessation and Sexual Health in Men

NCT00833404
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine transdermal patch
Drug
Lead sponsor
University of Texas at Austin
Other
Eligibility
23 Years to 60 Years · Male only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 12, 2011 · Synced Oct 17, 2026, 5:09 PM EDT
Completed Phase 2 Interventional

Erlotinib and Green Tea Extract (Polyphenon® E) in Preventing Cancer Recurrence in Former Smokers Who Have Undergone Surgery for Bladder Cancer

NCT00088946
View directory record Official record
Conditions
Bladder Cancer
Interventions
Polyphenon E, erlotinib hydrochloride, Erlotinib placebo, Polyphenon E
Dietary Supplement · Drug · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
5
States / cities
Phoenix, Arizona • Los Angeles, California • Santa Monica, California + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2020 · Synced Oct 17, 2026, 5:09 PM EDT