Overview
- The peer-reviewed paper published Tuesday in Frontiers in Oncology reports regular vapers showed altered activity in 3,124 genes compared with people who neither smoked nor vaped.
- The authors quantified that about 66.6% of the variation in gene activity was explained by product features rather than vaping frequency, with fruit flavors, mixing multiple flavors, and advanced refillable devices called mods tied to the largest changes.
- Researchers collected cheek-cell samples from 83 healthy young adults (35 vapers, 24 smokers, 24 non-users) and used RNA sequencing to measure genome-wide gene activity.
- Bioinformatics linked the gene-expression shifts most strongly to cancer-related pathways and to endocrine, gastrointestinal, and neurological pathways, but the team cautions these molecular markers do not by themselves prove future disease and the modest sample limits broad conclusions.
- The study team is conducting follow-up chemical analyses to pinpoint specific e-liquid compounds and the findings are being offered as product-level evidence that could shape FDA evaluations and possible regulatory steps.