Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Jun 10, 2026, 9:34 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Former Smoker Clear all
Active, not recruiting Phase 3 Interventional

Optimizing Tobacco Use Treatment for PLWHA

NCT04176172
View directory record Official record
Conditions
HIV/AIDS, Nicotine Dependence
Interventions
Varenicline, Nicotine patch, Standard treatment, Standard treatment + Managed Problem Solving (MAPS) adherence intervention
Drug · Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
2
States / cities
Chicago, Illinois • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jun 10, 2026, 9:34 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 24, 2022 · Synced Jun 10, 2026, 9:34 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Vaped Phenanthrene

NCT07134426
View directory record Official record
Conditions
Former Smoker, Non-Smoker
Interventions
D10-phenanthrene
Other
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Phase 1 Interventional

Iloprost in Preventing Lung Cancer in Former Smokers

NCT02237183
View directory record Official record
Conditions
Lung Carcinoma
Interventions
Iloprost, Placebo Administration, Quality-of-Life Assessment, Questionnaire Administration
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 85 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
2
States / cities
Aurora, Colorado • Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 27, 2023 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Not applicable Interventional

Effectiveness of Smoking-cessation Interventions for Urban Hospital Patients

NCT01363245
View directory record Official record
Conditions
Smoking Cessation
Interventions
Telephone Counseling, Fax-to-quit
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
1,618 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 1, 2015 · Synced Jun 10, 2026, 9:34 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 Apr 27, 2026 · Synced Jun 10, 2026, 9:34 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Feasibility of Cell-Free DNA Liquid Biopsy in Screening High-Risk Patients for Lung Cancer

NCT05384769
View directory record Official record
Conditions
Lung Carcinoma
Interventions
Liquid Biopsy, Low Dose Computed Tomography of the Chest, Survey Administration
Procedure · Other
Lead sponsor
City of Hope Medical Center
Other
Eligibility
50 Years to 80 Years
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2029
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Oct 6, 2025 · Synced Jun 10, 2026, 9:34 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 11, 2011 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing Different Theories of Smoking Cessation: An Intervention Study

NCT01209897
View directory record Official record
Conditions
Smoking Cessation
Interventions
Smoking cessation booklet
Behavioral
Lead sponsor
University of Hawaii
Other
Eligibility
18 Years and older
Enrollment
1,826 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated May 13, 2024 · Synced Jun 10, 2026, 9:34 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 15, 2026 · Synced Jun 10, 2026, 9:34 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 7, 2025 · Synced Jun 10, 2026, 9:34 PM EDT
Not yet recruiting Not applicable Interventional

Pain and Smoking Study - Interactive Voice Response

NCT06442514
View directory record Official record
Conditions
Smoking, Pain, Smoking Cessation
Interventions
PASS-IVR, 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 May 5, 2026 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

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
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Jun 10, 2026, 9:34 PM EDT
Completed No phase listed Observational

Quantitation of Human Cerebral Nicotinie Receptors With 2[18F]FA-85380 and PET Healthy Non-smokers and Ex-Smokers and in Heavy and Light Situational Smokers

NCT01038245
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 50 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jun 10, 2026, 9:34 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 20, 2020 · Synced Jun 10, 2026, 9:34 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 30, 2020 · Synced Jun 10, 2026, 9:34 PM EDT
Terminated Phase 2 Interventional

Cholecalciferol Supplementation in Strengthening Inspiratory Muscles in Cholecalciferol-Deficient Patients With Chronic Obstructive Pulmonary Disease

NCT02877641
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Muscle Weakness
Interventions
Cholecalciferol, Laboratory Biomarker Analysis, Multivitamin, Placebo, Questionnaire Administration
Dietary Supplement · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
50 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Feb 14, 2017 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Phase 3 Interventional

Efficacy and Safety of Rimonabant as an Aid to Maintenance of Smoking Cessation

NCT00459173
View directory record Official record
Conditions
Maintenance of Smoking Cessation
Interventions
rimonabant (SR141716)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
4,850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 6, 2009 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Phase 2 Interventional Results available

Green Tea or Polyphenon E in Preventing Lung Cancer in Former Smokers With Chronic Obstructive Pulmonary Disease

NCT00363805
View directory record Official record
Conditions
Lung Cancer Prevention
Interventions
green tea, Polyphenon E, placebo
Dietary Supplement · Drug · Other
Lead sponsor
Sherry Chow
Other
Eligibility
40 Years to 80 Years
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
3
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 27, 2013 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Not applicable Interventional Results available

Incentive-based and Media Literacy Informed Approaches to Improve Vaping Cessation

NCT05586308
View directory record Official record
Conditions
Behavior, Health Risk, Implementation Science, E Cigarette Use, Cessation, Smoking, Incentives, Engagement, Patient, Peer Support, Media Literacy
Interventions
Text-massaging suport, Financial incentive, Media literacy
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 29 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Jun 10, 2026, 9:34 PM EDT
Recruiting Not applicable Interventional

Preliminary Effectiveness of Enhanced Text Message + Incentives

NCT07420621
View directory record Official record
Conditions
Smoking Cessation, Pregnancy
Interventions
Text Messages, Incentives
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Jun 10, 2026, 9:34 PM EDT
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 21, 2025 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Quit Smoking Study for People Who Use E-Cigarettes

NCT04946825
View directory record Official record
Conditions
Nicotine Addiction, E-Cig Use, Quitting Smoking
Interventions
Nicotine replacement therapy patch, Nicotine replacement therapy lozenge, Quit electronic cigarettes, Continue electronic cigarettes
Drug · Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 29 Years
Enrollment
396 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated May 21, 2025 · Synced Jun 10, 2026, 9:34 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study To Evaluate Cardiac Assessments Following Different Treatments Of Smoking Cessation Medications In Subjects With And Without Psychiatric Disorders.

NCT01574703
View directory record Official record
Conditions
Smoking Cessation
Interventions
placebo, varenicline tartrate, bupropion hydrochloride, Nicotine Replacement Therapy Patch
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
4,595 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
65
States / cities
Mobile, Alabama • Encino, California • Escondido, California + 54 more
Source: ClinicalTrials.gov public record
Updated Dec 28, 2016 · Synced Jun 10, 2026, 9:34 PM EDT