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ClinicalTrials.gov public records Last synced Oct 27, 2026, 1:40 PM EDT

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Showing 1–24 of 87 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Former Smoker Clear all
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 27, 2026, 1:40 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 27, 2026, 1:40 PM EDT
Completed Phase 2 Interventional Results available

A Trial of Placebo Versus Enzastaurin for Lung Cancer Prevention in Former Smokers

NCT00414960
View directory record Official record
Conditions
Lung Cancer
Interventions
Enzastaurin, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
45 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Sep 21, 2020 · Synced Oct 27, 2026, 1:40 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 27, 2026, 1:40 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Nivolumab for the Reversal of Squamous Dysplasia in High Risk Current and Former Smokers

NCT03347838
View directory record Official record
Conditions
Bronchial Dysplasia, Tobacco Smoking, History of Non-Small Cell Lung Cancer, History of Head and Neck Cancer
Interventions
Nivolumab
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 80 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
2
States / cities
Aurora, Colorado • Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 12, 2025 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Glucobrassicin-Brussel Sprout Effect on D10 Phe Metabolism

NCT02999399
View directory record Official record
Conditions
Smoking
Interventions
Brussel Sprouts, Deuterated Phenanthrene
Other · Drug
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years to 99 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 17, 2023 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Smartphone Application Smoking Cessation Study

NCT04623736
View directory record Official record
Conditions
Tobacco Use
Interventions
quitSTART
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 10, 2021 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Phase I/II Study of Chemoprevention With EGFR and COX-2 Inhibitor

NCT00314262
View directory record Official record
Conditions
Precancerous Conditions
Interventions
Erlotinib & Celecoxib
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 24, 2014 · Synced Oct 27, 2026, 1:40 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Veteran Social Support for Enhancing Use of Smoking Cessation Treatment

NCT05868421
View directory record Official record
Conditions
Smoking Cessation, Veterans Health
Interventions
Support Person Coaching Call, SP written materials, Written Smoking Cessation Materials
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
2,376 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Phase 3 Interventional Results available

Study Comparing Veliparib Plus Carboplatin and Paclitaxel Versus Investigator's Choice of Standard Chemotherapy in Adults Receiving First Cytotoxic Chemotherapy for Metastatic or Advanced Non-Squamous Non-Small Cell Lung Cancer (NSCLC) and Who Are Current or Former Smokers

NCT02264990
View directory record Official record
Conditions
Non-squamous Non-small Cell Lung Cancer
Interventions
Paclitaxel, Carboplatin, Cisplatin, Veliparib, Pemetrexed
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years and older
Enrollment
595 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
25
States / cities
Huntsville, Alabama • Mobile, Alabama • Springdale, Arkansas + 21 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2021 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Phase 4 Interventional

Smoking Cessation in Alcoholism Treatment

NCT00000454
View directory record Official record
Conditions
Alcoholism, Smoking
Interventions
nicotine replacement patch
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2002
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 19, 2010 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Impact of Smoking Cessation and γ-Tocopherol to Restore Vascular Endothelial Function

NCT01314443
View directory record Official record
Conditions
Endothelial Dysfunction
Interventions
Nicotine Replacement Therapy (NRT), Gamma-Tocopherol, Placebo, Smoking cessation
Other · Dietary Supplement · Behavioral
Lead sponsor
University of Connecticut
Other
Eligibility
18 Years to 60 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 21, 2015 · Synced Oct 27, 2026, 1:40 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 27, 2026, 1:40 PM EDT
Completed Not applicable Interventional

A Feasibility Study of Smoking Cessation Program in Radiation Oncology

NCT00236288
View directory record Official record
Conditions
Cancer and Tobacco Abuse
Interventions
Bupropion and intensive behavioral therapy
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 31, 2007 · Synced Oct 27, 2026, 1:40 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 27, 2026, 1:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Offering Proactive Tobacco Treatment

NCT01123967
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
proactive outreach (PRO), telephone counseling (TC), Nicotine replacement therapy (NRT), Usual care (UC)
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 64 Years
Enrollment
2,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 27, 2015 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Determinants of Smoking Cessation Among Latinos

NCT01008748
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine Replacement Therapy (NRT), Questionnaire, Counseling, Self-Help Materials
Drug · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years to 65 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 19, 2020 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Phase 2 Interventional Results available

Clinical Trial of Lung Cancer Chemoprevention With Sulforaphane in Former Smokers

NCT03232138
View directory record Official record
Conditions
Lung Cancer
Interventions
Sulforaphane, Placebo
Dietary Supplement · Drug
Lead sponsor
Jian-Min Yuan, MD
Other
Eligibility
55 Years to 75 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 17, 2024 · Synced Oct 27, 2026, 1:40 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 27, 2026, 1:40 PM EDT
Active, not recruiting Phase 1 Interventional

A Study of Exercise and Pharmacologic Intervention on Systemic Inflammation

NCT07058974
View directory record Official record
Conditions
Smokers, Former Smokers
Interventions
lamivudine, rapamycin, Exercise Regimen, Spermidine
Drug · Behavioral · Dietary Supplement
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
60 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Not applicable Interventional

Lung Cancer Screening Study With Low-dose CT Scan and Blood Biomarker

NCT01700257
View directory record Official record
Conditions
High Risk of Developing Lung Cancer
Interventions
CT scan & Early CDT Lung test, CT scan & Early CDT Lung test
Radiation · Other
Lead sponsor
National Jewish Health
Other
Eligibility
50 Years to 75 Years
Enrollment
1,361 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 31, 2020 · Synced Oct 27, 2026, 1:40 PM EDT
Withdrawn Not applicable Interventional

Incentives for Participation Versus Outcomes

NCT01826331
View directory record Official record
Conditions
Smoking
Interventions
Incentives for Participation, Incentives for Cessation
Behavioral
Lead sponsor
University of Rhode Island
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Kingston, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 17, 2025 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Phase 2 Interventional Results available

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

NCT00783705
View directory record Official record
Conditions
Non-small Cell Lung Cancer, Squamous Lung Dysplasia
Interventions
placebo, inositol
Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
45 Years to 79 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
3
States / cities
Scottsdale, Arizona • Rochester, Minnesota • Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Dec 5, 2017 · Synced Oct 27, 2026, 1:40 PM EDT
Completed Not applicable Interventional

Indoor Air Quality and Respiratory Symptoms in Former Smokers

NCT02956213
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
HEPA portable air filter, Sham Control/Active Comparator
Other
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
40 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 13, 2019 · Synced Oct 27, 2026, 1:40 PM EDT