Varenicline to help adults quit daily e-cigarettes and reduce DNA-damage markers

Investigating Efficacious E-Cigarette Interventions and Cessation Effects on Cancer-Related Biomarkers: A Randomized Trial of Varenicline in Adults

['FUNDING_R01'] · YALE UNIVERSITY · NIH-11262310

This project will see whether the stop-smoking medicine varenicline helps adults who vape every day quit e-cigarettes and lowers markers of DNA damage linked to cancer.

Quick facts

Phase['FUNDING_R01']
Study typeNih_funding
SexAll
SponsorYALE UNIVERSITY (nih funded)
Locations1 site (NEW HAVEN, UNITED STATES)
Trial IDNIH-11262310 on ClinicalTrials.gov

What this research studies

If you join, you would be one of about 326 adults (age 18+) who use e-cigarettes daily and want help quitting. Participants will be randomly assigned to receive varenicline or a placebo and will attend clinic visits and follow-up over the study period. The team will track whether people stop using e-cigarettes and will measure biological markers in blood and urine that show DNA damage and repair (for example, 8-oxoG). The study aims to see if quitting with varenicline also reduces these cancer-related biomarkers.

Who could benefit from this research

Good fit: Adults aged 18 and older who use e-cigarettes every day, want to quit, and can attend study visits are the ideal candidates.

Not a fit: People under 18, those who do not use e-cigarettes daily, or those not interested in quitting are unlikely to be eligible or to benefit from this trial.

Why it matters

Potential benefit: If successful, this could provide a proven medication option to help people who vape quit and may show reduced biological signs of DNA damage.

How similar studies have performed: A small 8-week pilot (N=40) by the same team showed promising signals that varenicline increased e-cigarette cessation, but larger randomized trials are needed to confirm the effect.

Where this research is happening

NEW HAVEN, UNITED STATES

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.

View on NIH RePORTER →

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.