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Showing 1–24 of 124 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Non-smokers Clear all
Completed No phase listed Observational

Prospective Natural History Study of Smoking, Immune Cell Profiles, Epigenetics and COVID-19

NCT04403386
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
30 Years to 55 Years
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Not applicable Interventional

Computer-Assisted Counseling in Helping African American Smokers Stop Smoking

NCT00310141
View directory record Official record
Conditions
Lung Cancer
Interventions
Smoking cessation intervention, Counseling intervention, Nicotine patch
Behavioral · Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
21 Years to 65 Years
Enrollment
462 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2017 · Synced Jul 22, 2026, 8:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Memory and Picture Viewing Study

NCT00736203
View directory record Official record
Conditions
Healthy, Brain Reactivity of Non-smokers Undergoing fMRI Scanning
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 6, 2013 · Synced Jul 22, 2026, 8:22 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

COPD Metabolome, Smoking Oxidants and Aberrant Ciliated Cell Function

NCT01974154
View directory record Official record
Conditions
COPD, Smoking
Interventions
Cohort I, Cohort II
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
206 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2020 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Delivery From Novel Non-Tobacco Electronic System in Smokers

NCT02575885
View directory record Official record
Conditions
Cigarette Smoker, Current Smoker, Healthy Subject
Interventions
Electronic Cigarette, Laboratory Biomarker Analysis, Pharmacological Study, Questionnaire Administration
Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 11, 2018 · Synced Jul 22, 2026, 8:22 PM EDT
Terminated Phase 1 Interventional

Study to Assess Safety, Tolerability and PK of AZD1480 in Patients With Solid Tumours

NCT01112397
View directory record Official record
Conditions
Solid Malignancies
Interventions
AZD1480
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
3
States / cities
Aurora, Colorado • Detroit, Michigan • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 21, 2013 · Synced Jul 22, 2026, 8:22 PM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Wound Healing Following Extraction and Ridge Preservation in Smokers and Non-smokers

NCT07372183
View directory record Official record
Conditions
Smoking, Cigarette, Alveolar Bone Grafting, Wound Healing, Bone Healing, Tooth Extraction Site Healing
Interventions
observational study
Other
Lead sponsor
Marquette University
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Jul 22, 2026, 8:22 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 2, 2016 · Synced Jul 22, 2026, 8:22 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 16, 2020 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Donepezil on Smoking

NCT01250977
View directory record Official record
Conditions
Smoking
Interventions
Donepezil, Placebo
Drug
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 10, 2019 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Comparative Abuse Liability Among African American and White Smokers

NCT04646668
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
E-cigarette and Heat not burn
Combination Product
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Intervention Study to Increase Smoking Cessation Rates Among Public Housing Residents

NCT01651611
View directory record Official record
Conditions
Tobacco Cessation
Interventions
Motivational interviewing, Smoking cessation counseling, Navigation to smoking cessation resources, Social support
Behavioral
Lead sponsor
Boston University
Other
Eligibility
18 Years to 79 Years
Enrollment
330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 28, 2016 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Avocado and Postprandial Responses

NCT06818032
View directory record Official record
Conditions
Healthy, Healthy Volunteer, Healthy Volunteers, Healthy Adult, Healthy Male and Female Subjects, Healthy Subjects, Healthy Volunteers Only, Healthy Non-smokers
Interventions
Negative control, Avocado, Fat and fiber addition
Other
Lead sponsor
University of Vermont Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 22, 2026, 8:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Natural History of Gene Expression in the Lung Cells of Non-Smokers, Smokers and Ex-Smokers in Health and Disease

NCT00974064
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD), Smoking, Smoking Cessation, Chronic Bronchitis, Emphysema
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 26, 2020 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Results available

Bortezomib in KRAS-Mutant Non-Small Cell Lung Cancer in Never Smokers or Those With KRAS G12D

NCT01833143
View directory record Official record
Conditions
Non-Small Cell Lung Cancer
Interventions
Bortezomib, Acyclovir
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
5
States / cities
Basking Ridge, New Jersey • Commack, New York • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 3, 2020 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Results available

S0636: Erlotinib and Bevacizumab in Never-Smokers With Stage IIIB or Stage IV Primary Non-Small Cell Lung Cancer

NCT00445848
View directory record Official record
Conditions
Lung Cancer
Interventions
bevacizumab, erlotinib hydrochloride
Biological · Drug
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years to 120 Years
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
153
States / cities
Antioch, California • Berkeley, California • Burlingame, California + 109 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2020 · Synced Jul 22, 2026, 8:22 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Effects of Electronic Cigarettes on Lung Biology

NCT02188511
View directory record Official record
Conditions
Lung Disease, Lung Disorder
Interventions
Group A, Group B, Group C, Group D, Group E
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
21 Years to 85 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 23, 2020 · Synced Jul 22, 2026, 8:22 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Controlled Exposure of Healthy Nonsmokers to Secondhand and Thirdhand Cigarette Smoke

NCT04013256
View directory record Official record
Conditions
Pollution; Exposure, Smoke Inhalation, Exposure to Pollution
Interventions
Cigarette Smoke, Clean Air and Clean Clothing/Sham exposure
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 50 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 27, 2023 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Not applicable Interventional Results available

Switching to Potential Reduced Exposure Products in Adult Smokers

NCT04250727
View directory record Official record
Conditions
Tobacco Use Disorder, Oral Nicotine Pouch Use, Smoking Behaviors, Harm Reduction, Toxic Effect of Tobacco and Nicotine, Carcinogenesis
Interventions
ZYN
Device
Lead sponsor
Yale University
Other
Eligibility
21 Years to 77 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 30, 2024 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Results available

Phase II Trial to Correlate Radiographic Response Induced By Gefitinib With Mutations in the Protein-Tyrosine Kinase Domain of the EGF Receptor Gene

NCT00588445
View directory record Official record
Conditions
Lung Cancer, Non-small Cell Lung Cancer, Bronchioloalveolar Cancer
Interventions
Gefitinib
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 21, 2016 · Synced Jul 22, 2026, 8:22 PM EDT
Recruiting Phase 2 Interventional

A Study of LP-300 With Carboplatin and Pemetrexed in Never Smokers With Advanced Lung Adenocarcinoma

NCT05456256
View directory record Official record
Conditions
Adenocarcinoma of Lung, Carcinoma, Non-Small-Cell Lung
Interventions
LP-300, Pemetrexed, Carboplatin
Drug
Lead sponsor
Lantern Pharma Inc.
Industry
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
6
States / cities
Beverly Hills, California • Fountain Valley, California • Los Alamitos, California + 3 more
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Jul 22, 2026, 8:22 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Switching to E-cigarettes in Smokers Not Interested in Quitting

NCT05703672
View directory record Official record
Conditions
Smoking Reduction
Interventions
Varenicline Tartrate, Placebo, Electronic cigarette
Drug · Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
2
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 28, 2025 · Synced Jul 22, 2026, 8:22 PM EDT
Completed Not applicable Interventional

Not Quite Ready to Quit

NCT01866722
View directory record Official record
Conditions
Smoking Cessation
Interventions
Usual care, Reduction, 5Rs
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
560 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jul 30, 2017 · Synced Jul 22, 2026, 8:22 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 4, 2017 · Synced Jul 22, 2026, 8:22 PM EDT