- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05660798
Effects of Switching From Cigarettes to Tobacco Heating System on Coronary Atherosclerosis Progression (SWITCH)
Effects of Switching From Cigarettes to Tobacco Heating System on Coronary Atherosclerosis Progression in Patients With Stable Coronary Artery Disease
Objective:
To evaluate the impact of heated versus combustion tobacco products on progression of atherosclerosis in patients with CAD unable(unwilling) to quit smoking.
Rationale:
Despite the efforts to curb smoking and full awareness of its deleterious health impact, smoking remains a significant contributor to morbidity and mortality. Some health impact of smoking may be improved by other forms of cigarettes than traditional combustion, especially for subjects unwilling or unable to stop smoking. As recently as 2020, one of heated tobacco products (HTP)(IQOS) was FDA Authorized as a 'Reduced Exposure' product. The available evidence to date allows to conclude that the IQOS system heats tobacco but does not burn it, which significantly reduces the production of harmful and potentially harmful chemicals. Scientific studies have shown that switching completely from conventional cigarettes to the IQOS system significantly reduced body's exposure to harmful or potentially harmful chemicals. There is also evidence indicating lower levels of inflammatory markers and improved vascular function associated with use of heated tobacco products. However, it is unknown whether the reduction in the exposure translates into potential reduction of harm within cardiovascular system, as compared to the traditional (combustion) cigarettes.
The evidence is of crucial importance for patients with cardiovascular diseases, medical community, and national health authorities planning evidence based policies regarding HTP/cigarettes.
Study Overview
Status
Intervention / Treatment
Detailed Description
Objective:
To evaluate the impact of heated versus combustion tobacco products on progression of atherosclerosis in patients with CAD unable(unwilling) to quit smoking.
Background Despite the efforts to curb smoking and full awareness of its deleterious health impact, smoking remains a significant contributor to morbidity and mortality. Some health impact of smoking may be improved by other forms of cigarettes than traditional combustion, especially for subjects unwilling or unable to stop smoking. As recently as 2020, one of heated tobacco products (HTP)(IQOS) was FDA Authorized as a 'Reduced Exposure' product. The available evidence to date allows to conclude that the IQOS system heats tobacco but does not burn it, which significantly reduces the production of harmful and potentially harmful chemicals. Scientific studies have shown that switching completely from conventional cigarettes to the IQOS system significantly reduced body's exposure to harmful or potentially harmful chemicals. There is also evidence indicating lower levels of inflammatory markers and improved vascular function associated with use of heated tobacco products. However, it is unknown whether the reduction in the exposure translates into potential reduction of harm within cardiovascular system, as compared to the traditional (combustion) cigarettes.
The evidence is of crucial importance for patients with cardiovascular diseases, medical community, and national health authorities planning evidence based policies regarding HTP/cigarettes.
Methods:
Prospective, single-centre, open-label, randomised study including 180 stable patients with coronary artery disease (CAD) as diagnosed on CCTA, without indications for invasive treatment, unable(unwilling) to quit smoking, randomised 1:1 to either heated (group H) or combustion (group C) tobacco products and followed for 18 months. The follow-up is accomplished with CCTA scan. The study clinical visits are planned at 1, 3, 6, 12, and 18 months.
The primary outcome is change in non calcified plaque volume at 18 months between H and C groups (intention to treat design).
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Cezary Kepka, ND PhD
- Phone Number: +48223434150
- Email: ckepka@ikard.pl
Study Contact Backup
- Name: Mariusz Kruk, MD PhD
- Phone Number: +48223434342
- Email: mkruk@ikard.pl
Study Locations
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Warsaw, Poland, 04-628
- National Institute of Cardiology
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Adults aged >18 years and <75 years
- Subjects with stable chronic coronary syndrome defined as the presence of at least one coronary artery stenosis >=20% due to coronary plaque visible on coronary computed tomography angiography (CCTA), in an artery with a reference diameter > 2.0mm
- History of smoking pack-years ≥10 (Pack-years will be calculated by taking the average number of cigarettes smoked per day divided by 20 and multiplied by the number of years smoked), based on self-reporting
- Current smokers with a minimum of self-reported current smoking pattern of >10 cigarettes/day during the last 6 months prior to screening, smoking status will be verified based on a urinary cotinine test (cotinine ≥200 ng/mL)
- Patients that have been advised to quit smoking and informed of a smoking risk and cessation programs (per local SOC) and who are still not willing to set a quit date within the next 30 days at screening
- Stable treatment for coronary atherosclerosis according to the guidelines
- Have understood the study and have signed informed consent
Exclusion Criteria:
- Any acute cardiovascular event (i.e. ACS, MI, Stroke, TIA, Limb ischemia), unstable angina or revascularization within 30 days prior to screening
- Planned coronary intervention (PCI, CABG) at screening
- Previous CABG
- Preexisting heart failure with reduced ejection fraction (EF <50%)
- Severe uncontrolled hypertension (at the discretion of investigator)
- Diabetes
- Subjects with documented genetic familial hypercholesterolemia
- Subjects have known serious infection or chronic inflammatory systemic disease (e.g. rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis)
- Subjects have a known non-cardiovascular disease that is associated with poor prognosis (e.g. metastatic cancer)
- Patient with currently active cancer or history of cancer within the last 5 years
- Subjects have hypersensitivity or any other warnings listed in the local labeling for THS
- Subjects have hypersensitivity to imaging iodine contrast agents
- GFR<45 ml/min/1,73 m2
- Subjects who could not participate for any reason other than medical (e.g., psychological and/or social reason) per Investigator's judgment
- Subjects have any other clinical condition that would jeopardize the subject's safety while participating in this study, per Investigator's judgment
- Female subject is pregnant or breast-feeding, or planning to become pregnant during the study
- Subjects have previously participated in this study, or in an interventional study (drug or medical device) within 30 days of screening (participation in observational studies/registries allowed)
- Subjects have a close affiliation with the investigational site: a close relative of the investigator, a person dependent on the investigational site (e.g. employee or student of the investigational site)
- Subjects are current or former employee of the tobacco industry or their first-degree relatives (parent, child, spouse)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Supportive Care
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
No Intervention: combustion tobacco
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Experimental: heated tobacco
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Patients unable (unwilling) to stop smoking will be randomized to either combustion (C) or heated (H) tobacco groups.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in non calcified plaque volume between H and C groups ("intention to treat")
Time Frame: 0-18 months
|
CCTA based evaluation
|
0-18 months
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in total plaque volume
Time Frame: 0-18 months
|
CCTA based evaluation
|
0-18 months
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Change in plaque volume components (low attenuation, fibrous-fatty, fibrous, non-calcified plaque, calcified plaque)
Time Frame: 0-18 months
|
CCTA based evaluation
|
0-18 months
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Change in non calcified plaque volume between H and C groups ("as treated")
Time Frame: 0-18 months
|
CCTA based evaluation
|
0-18 months
|
Change in lipid metabolism
Time Frame: 0-18 months
|
Total cholesterol (TC) Triglycerides (TG) Lipoproteins: low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C) Apolipoproteins: apolipoprotein A1 (ApoA1), apolipoprotein B (ApoB) Lipoprotein(a) Lp(a)
|
0-18 months
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Change in oxidative stress
Time Frame: 0-18 months
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8-Epi prostaglandin F2 alpha (8 epi PGF2α) Myeloperoxidase (MPO)
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0-18 months
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Change in inflammation
Time Frame: 0-18 months
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High-sensitivity C-reactive protein (hs CRP) White blood cell (WBC) counts Homocysteine Interleukins (IL-6) Fibrinogen
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0-18 months
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Change in platelet activation
Time Frame: 0-18 months
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11-dehydro-thromboxane B2 (11 DTX B2) Plasminogen activator inhibitor-1 (PAI-1) Tissue plasminogen activator (t-PA) Platelet count Mean platelet volume (MPV)
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0-18 months
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Change in endothelial dysfunction
Time Frame: 0-18 months
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P-selectin Metalloproteinase 9 (MMP-9)
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0-18 months
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Change in haemodynamic stress
Time Frame: 0-18 months
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N-terminal pro b-type natriuretic peptide (NT-proBNP)
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0-18 months
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Change in myocardial injury
Time Frame: 0-18 months
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high-sensitivity troponin T (hs-TnT)
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0-18 months
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Change in glycemia control
Time Frame: 0-18 months
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Fasting Blood Glucose, HbA1c
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0-18 months
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Change in physical activity
Time Frame: 0-18 months
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self reported, mobile device monitoring
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0-18 months
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Change in exposure to nicotine
Time Frame: 0-18 months
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4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol , Nicotine equivalents in spot urine , 2-cyanoethylmercapturic acid
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0-18 months
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SAFETY (ADVERSE OUTCOMES)
Time Frame: 0-18 months
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Independent DSMB will evaluate the outcomes
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0-18 months
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Change in self reported product use
Time Frame: 0-18 months
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0-18 months
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Change in quality of life
Time Frame: 0-18 months
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EQ5D-5L
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0-18 months
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Cost/effectiveness analysis
Time Frame: 0-18 months
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0-18 months
|
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Subgroup analysis (AGE/SEX/CO-MORBIDITIES)
Time Frame: 1-18 months
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1-18 months
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Collaborators and Investigators
Collaborators
Publications and helpful links
General Publications
- Biondi-Zoccai G, Sciarretta S, Bullen C, Nocella C, Violi F, Loffredo L, Pignatelli P, Perri L, Peruzzi M, Marullo AGM, De Falco E, Chimenti I, Cammisotto V, Valenti V, Coluzzi F, Cavarretta E, Carrizzo A, Prati F, Carnevale R, Frati G. Acute Effects of Heat-Not-Burn, Electronic Vaping, and Traditional Tobacco Combustion Cigarettes: The Sapienza University of Rome-Vascular Assessment of Proatherosclerotic Effects of Smoking ( SUR - VAPES ) 2 Randomized Trial. J Am Heart Assoc. 2019 Mar 19;8(6):e010455. doi: 10.1161/JAHA.118.010455.
- Ikonomidis I, Vlastos D, Kostelli G, Kourea K, Katogiannis K, Tsoumani M, Parissis J, Andreadou I, Alexopoulos D. Differential effects of heat-not-burn and conventional cigarettes on coronary flow, myocardial and vascular function. Sci Rep. 2021 Jun 3;11(1):11808. doi: 10.1038/s41598-021-91245-9.
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- SWITCH01
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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