Some people who used to smoke cigarettes continue to be at higher risk of developing lung cancer, even years after quitting. This study will look to see if a specific chemical, phenanthrene, is broken down in the lungs of former smokers through more harmful pathways than never-smokers. If former smokers break down chemicals that enter their lungs through more harmful pathways this might be putting them at higher risk for developing lung cancer even though they quit smoking. This information may help find better ways to prevent or treat cancer in the future.
This study is under an IND, but the drug is not being studied; instead, it is being used as a marker for drug metabolism.
Who can participate
Age range
21 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* \> 21 years of age
* In good physical \& mental health
* In stable physical \& mental health
* Have tried vaping
* Former daily cigarette smokers who quit 1-20 year ago
* Non-smokers who have not used tobacco or nicotine products
Exclusion Criteria:
* Has any respiratory disease (ex - asthma, COPD, etc...)
* Has/had high blood pressure
* Has/had liver disease
* Has/had cancer
* Has experience negative effects when vaped previously
* Pregnant or nursing
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.