| Japanese Post-Market Cohort Study (NCT03020667) | Philip Morris Products S.A. | 2016-04-01 |
| Financial Incentive for Smoking Cessation in Pregnancy (NCT02606227) | Assistance Publique - Hôpitaux de Paris | 2016-04-01 |
| Improving Quality by Maintaining Accurate Problems in the EHR (NCT02596087) | Brigham and Women's Hospital | 2016-04-01 |
| Effects of Metformin During Nicotine Withdrawal (NCT03593538) | University of Pennsylvania | 2016-04-01 |
| Comparison of Pharmacokinetic Parameters Between Adopters of Electronic Cigarettes and a Historical Sample of Combustible Cigarette Smokers (NCT02730676) | R.J. Reynolds Vapor Company | 2016-04-01 |
| Self-Control and Adult Cigarette Smokers (NCT02663882) | Yeshiva University | 2016-04-01 |
| Adjunct Photodynamic Therapy in Chronic Periodontitis Among Cigarette-smokers. (NCT03308019) | King Saud University | 2016-02-16 |
| Effect of Packaging on Smoking Perceptions and Behavior (NCT02676193) | University of California, San Diego | 2016-02-01 |
| UW-CTRI Triple Medication Smoking Cessation Study (NCT02681510) | University of Wisconsin, Madison | 2016-02-01 |
| Policy-related Survey on Tobacco Control (NCT02750020) | The University of Hong Kong | 2016-02-01 |
| Comparison of Nicotine Plasma Concentrations and Subjective Effects for Three Menthol Electronic Cigarettes vs Combustible Menthol Cigarettes and Nicotine Gum (NCT02664012) | R.J. Reynolds Vapor Company | 2016-01-01 |
| Behavioural Activation Treatment for Smoking Cessation and Depressive Symptomatology: a Randomized Controlled Trial (NCT02844595) | University of Santiago de Compostela | 2016-01-01 |
| Maternal Smoking During Pregnancy and Female Fetal Testosterone Levels (NCT02610751) | TriHealth Inc. | 2016-01-01 |
| Reduced Exposure Study Using the CHTP 1.2 With 5 Days in a Confinement Setting Followed by 85 Days in an Ambulatory Setting. (NCT02641587) | Philip Morris Products S.A. | 2016-01-01 |
| A Study in a Human Laboratory Model of Smoking Behavior (NCT02641028) | Janssen Research & Development, LLC | 2015-12-31 |
| A Study of the Safety and Levodopa Pharmacokinetics Following Single Dose Administration of CVT 301 (Levodopa Inhalation Powder) in Smoking and Non-Smoking Adults (NCT02633839) | Acorda Therapeutics | 2015-12-01 |
| Prevalence of COPD in Our Lung Cancer Population, Compared to Controls (NCT02603627) | Guy's and St Thomas' NHS Foundation Trust | 2015-12-01 |
| Program on Lung Cancer Screening and Tobacco Cessation (NCT02597491) | University of Minnesota | 2015-12-01 |
| Telephone-Delivered Interventions for Smoking Cessation (NCT02421991) | Fred Hutchinson Cancer Center | 2015-11-02 |
| Insular Inhibitory Neuromodulation to Reduce Cigarette Craving and Alter Brain Function in Smokers (NCT02590640) | University of Colorado, Denver | 2015-11-01 |
| Comparison of Smoking and Vaping in Families (NCT02500238) | University of Florida | 2015-11-01 |
| User Acceptability of a Nicotine Lactate Delivery System (P3L) (NCT02643693) | Philip Morris Products S.A. | 2015-11-01 |
| In It To Quit: Commitment Contracts for Smoking Cessation (NCT02596061) | Community Health Center, Inc. | 2015-11-01 |
| Medical Student INtervention to Promote Effective Nicotine Dependence and Tobacco HEalthcare (NCT02601599) | Royal College of Surgeons, Ireland | 2015-11-01 |
| Theta Burst TMS as a Tool to Change Smoking Behavior (NCT02939339) | Medical University of South Carolina | 2015-10-01 |
| A Pilot Randomized Controlled Trial of Financial Incentives, Text Messaging, and Usual Care for Homeless Smokers (NCT02565381) | Massachusetts General Hospital | 2015-10-01 |
| Nicotine Pharmacokinetic and Pharmacodynamics Profile, Safety and Tolerability of P3L (NCT02532374) | Philip Morris Products S.A. | 2015-10-01 |
| Electronic Cigarette Use and Quitting in Youth (NCT02949648) | The University of Hong Kong | 2015-09-01 |
| Impact of Smoking Information on Concerns About Radon (NCT03499535) | Paul Windschitl | 2015-08-07 |
| The END Perioperative Smoking Pilot Study (NCT02482233) | University of California, San Francisco | 2015-08-01 |
| Clinical Conditions and Prevalence of Periodontopathogens in Smokers and Non-smokers After Periodontal Therapy (NCT02581319) | University of Sao Paulo | 2015-07-01 |
| Reduced Exposure Study Using CHTP 1.0 During 5 Days in Confinement. (NCT02503254) | Philip Morris Products S.A. | 2015-07-01 |
| Financial Incentives for Smoking Treatment (NCT02506829) | NYU Langone Health | 2015-07-01 |
| Smoking Cessation Among People Attending A&E (NCT02660957) | The University of Hong Kong | 2015-07-01 |
| Cessation in Non-Daily Smokers (NCT02168855) | Brian Primack | 2015-06-01 |
| Very-Low Nicotine Cigarettes and Non-Daily Smokers (NCT02228824) | Saul Shiffman | 2015-06-01 |
| Melatonin in Smoke-induced Vascular Injury (NCT02591238) | Peking Union Medical College Hospital | 2015-06-01 |
| Electronic Cigarettes (E-cigarettes) as a Harm Reduction Strategy (NCT02628964) | NYU Langone Health | 2015-05-01 |
| Nicotine Pharmacokinetic Profile of the CHTP 1.1 M (NCT02466412) | Philip Morris Products S.A. | 2015-05-01 |
| Integrative-omics of the Disordered COPD Small Airway Epithelium (NCT02183818) | Weill Medical College of Cornell University | 2015-04-06 |
| Effect of Electronic Cigarettes on Platelets, Endothelium and Inflammation (NCT02662075) | NYU Langone Health | 2015-04-01 |
| Evaluation of Biological and Functional Changes in Healthy Smokers After Switching to THS 2.2 for 26 Weeks (NCT02396381) | Philip Morris Products S.A. | 2015-03-12 |
| Impact of a Regional Program Agir Sur Sa SantE (NCT02478853) | Université de Sherbrooke | 2015-03-01 |
| Project 1: Evaluating EHR-Based Health System Modifications for the Chronic Care of Smoking (NCT02358330) | University of Wisconsin, Madison | 2015-02-01 |
| Web and Mobile Smoking Cessation (NCT01952236) | Oregon Research Institute | 2015-02-01 |
| Assessment of V0018 1.5 mg Effect on Craving (NCT02359201) | Pierre Fabre Medicament | 2015-02-01 |
| Promoting Oral Health Among Smokers Randomized Trial (NCT02347124) | Kaiser Permanente | 2015-02-01 |
| Alpha-1 Carrier Genomics Study (NCT02810327) | Medical University of South Carolina | 2015-02-01 |
| Smoking Cessation After Acute Coronary Syndrome (NCT03209622) | University of Monastir | 2015-01-02 |
| Mobile Contingency Management for Smoking Cessation in Returning US Veterans (NCT02513069) | Duke University | 2015-01-01 |
| Tobacco Cessation Training Program in Spanish-speaking Countries (NCT02718872) | Institut Català d'Oncologia | 2015-01-01 |
| Motivation Project: Testing Intervention Components for the Smoker Who is Unwilling to Quit (NCT02354872) | University of Wisconsin, Madison | 2015-01-01 |
| Influence of Smoking on Periodontal Healing One Year After Active Treatment (NCT03265821) | Dalarna County Council, Sweden | 2015-01-01 |
| Pulmonary Rehabilitation and Smoking (NCT03671187) | Izmir Katip Celebi University | 2015-01-01 |
| Efficacy of Smoking Cessation Intervention for Head and Neck Cancer Patients (NCT03786172) | Saint-Joseph University | 2015-01-01 |
| Smoking Cessation in Workplaces in Hong Kong [Phase II] (NCT02659774) | The University of Hong Kong | 2015-01-01 |
| Assess Biomarkers of Tobacco Exposure and Nicotine Pharmacokinetics in Smokers After a 5-Day In-Clinic Confinement Switch to an Electronic Cigarette or Nicotine Gum (NCT02323438) | R.J. Reynolds Vapor Company | 2014-12-01 |
| Safety and Efficacity of NFL101 as Tobacco Therapy (NCT02521701) | Institut du Cancer de Montpellier - Val d'Aurelle | 2014-12-01 |
| Intensive Smoking and Alcohol Cessation Intervention in Bladder Cancer Surgery Patients (NCT02188446) | Rigshospitalet, Denmark | 2014-11-01 |
| A Trial of E-cigarettes in Current Cigarette Smokers (NCT02357173) | Medical University of South Carolina | 2014-11-01 |
| Placebo-controlled Trial of Bupropion for Smoking Cessation in Pregnant Women (NCT02188459) | Henry Kranzler | 2014-10-30 |
| Tobacco Status Project: Social Media Intervention for Young Adult Smokers (NCT02207036) | University of California, San Francisco | 2014-10-01 |
| Transdermal Patch CVD 1000: The Effect of Heat on Nicotine Release From Nicotine Patches in Adult Smokers (NCT02371850) | University of Maryland, Baltimore | 2014-10-01 |
| Smoking Cessation for Depression and Anxiety Treatment (NCT02002858) | University of Houston | 2014-10-01 |
| The Effect of Smoking and Non-surgical Periodontal Treatment on Gingival Crevicular Fluid Cyclophilin A and EMMPRIN Levels (NCT04430764) | Ege University | 2014-10-01 |
| A Quit Smoking Study Using Smartphones (NCT02164383) | University of Wisconsin, Madison | 2014-10-01 |
| Flavor Test Results in General Population (NCT03506074) | Federico II University | 2014-10-01 |
| Smartphone Application for Smoking Cessation (NCT02134509) | Yale University | 2014-10-01 |
| The Effect of Physical Activity and Abstain From Smoking on the Precancerous Lesion (NCT03093623) | Taipei Medical University | 2014-10-01 |
| Effects of Smoking Environment on Craving and Smoking (NCT02416986) | Duke University | 2014-10-01 |
| Short Term Effects of Electronic Cigarettes in Tobacco Dependent Adults (NCT02498145) | Yale University | 2014-10-01 |
| Smoking Dependence and Periodontitis (NCT03901066) | University of Liege | 2014-09-03 |
| Self-Monitoring of Carbon Monoxide to Enhance Reproductive Outcomes in Women (NCT02246114) | Milton S. Hershey Medical Center | 2014-09-01 |
| Tailored Inhibitory Control Training to Reverse EA-linked Deficits in Mid-life (NCT02945371) | University of Oregon | 2014-09-01 |
| The Moment Study: Mixed Method E-cigarette Study (NCT02261363) | Truth Initiative | 2014-08-01 |
| Brief Tobacco Cessation Counselling: Mini Train-the-trainers Program (NCT02508597) | The University of Hong Kong | 2014-08-01 |
| Brief Tobacco Cessation Intervention (NCT02494960) | The University of Hong Kong | 2014-08-01 |
| Synbiotic as an Adjunct to Mechanical Treatment of Gingivitis (NCT03455192) | Kırıkkale University | 2014-07-22 |
| Defective FGFR2 Signaling in the Small Airway Basal Progenitor Cells in COPD (NCT02341326) | Weill Medical College of Cornell University | 2014-07-01 |
| Tobacco Intervention in Primary Care Treatment Opportunities for Providers (NCT02096029) | Medical University of South Carolina | 2014-07-01 |
| Proactive Outreach for Smokers in VA Mental Health (NCT01737281) | VA Office of Research and Development | 2014-07-01 |
| Sebum Collection and Skin Barrier Function Analysis (NCT03112876) | University of California, Davis | 2014-06-27 |
| Effects of Smoking on Non-surgical Periodontal Therapy in Generalized Aggressive Periodontitis (NCT03512938) | Ege University | 2014-06-23 |
| Investigation on the Effect of Smoking on the Expression of Pro- and Anti-thrombotic, Anti-oxidative, and Inflammatory Markers in Humans (NCT02198937) | University of Zurich | 2014-06-01 |
| Effects of Tobacco Products on Live Attenuated Influenza Virus (LAIV) Infections in Human Volunteers (NCT02019745) | University of North Carolina, Chapel Hill | 2014-06-01 |
| A Comparison of the Effectiveness of Two Approaches in Achieving Smoking Abstinence (NCT02701686) | The University of Hong Kong | 2014-06-01 |
| Texting to Promote Tobacco Abstinence in Emergency Department Smokers: A Pilot Study (NCT02081144) | Yale University | 2014-05-01 |
| Evaluation of Environmental Emissions From Electronic Cigarettes and Tobacco-Burning Cigarettes (NCT02185898) | R.J. Reynolds Vapor Company | 2014-05-01 |
| Smoking Cessation Versus Long-term Nicotine Replacement Among High-risk Smokers (NCT02148445) | University of Kansas Medical Center | 2014-05-01 |
| Comparison of Nicotine Plasma Concentrations and Subjective Effects for Three Electronic Cigarettes vs Combustible Cigarettes and Nicotine Gum (NCT02269514) | R.J. Reynolds Vapor Company | 2014-05-01 |
| Early Detection of and Intervention Towards Chronic Diseases Among Individuals Without Formal Education (NCT01979107) | University of Southern Denmark | 2014-04-22 |
| Testing Methods of Self-persuasion Involving Cigarette Smoking (NCT02069483) | Duke University | 2014-04-01 |
| Study of a Community Based Approach to Control Cardiovascular Risk Factors in India (NCT02115711) | University Hospitals Cleveland Medical Center | 2014-04-01 |
| Randomized Trial of Web-Delivered Acceptance Therapy for Smoking Cessation (WebQuit) (NCT01812278) | Fred Hutchinson Cancer Center | 2014-03-24 |
| Incentives for Participation Versus Outcomes (NCT01826331) | University of Rhode Island | 2014-03-01 |
| Mobile Sensing of Smoking Behavior (NCT02116283) | Duke University | 2014-03-01 |
| BABY STEPS II: SMS Scheduled Gradual Reduction Text Messages to Help Pregnant Smokers Quit (NCT01995097) | Duke University | 2014-03-01 |
| Characterization of Nicotine Exposure and Urge-to-Smoke Following Use of Electronic and Conventional Cigarettes (NCT02210754) | Lorillard Tobacco Company | 2014-03-01 |
| Factors That Influence Adipose Derived Regenerative Cells' Yield and Viability (NCT02651233) | Clinical Centre of Serbia | 2014-03-01 |
| Immunosuppressive Effects of Smoking and HIV-1 on the Development of Lung Disease (NCT02058719) | University of Colorado, Denver | 2014-03-01 |