12-week clinical exposure evaluation of a third-generation electrically heated cigarette smoking system (EHCSS) in adult smokers.
This randomized, controlled, forced-switching, open-label, parallel-group, single-center study in 90 male and female adult smokers evaluated six biomarkers of tobacco smoke exposure over a 12-week period of unrestricted smoking in the participants' normal life setting. Baseline biomarker levels were measured, then participants were randomly assigned to switch to an electrically heated cigarette smoking system (EHCSS, Series K) or to continue smoking a conventional cigarette (CC) of similar tar yield (Federal Trade Commission method) for 12 weeks. Compared to Baseline, adult smokers who switched to the EHCSS for 12 weeks in their normal life setting had significantly reduced nicotine equivalents (-33%), total NNAL (a biomarker for NNK, -63%), 1-OHP (a surrogate biomarker for polycyclic aromatic hydrocarbons, -38%), carboxyhemoglobin (a biomarker for carbon monoxide, -23%), 3-HPMA (a biomarker for acrolein, -25%) and S-PMA (a biomarker for benzene, -49%), whereas exposure was stable in the CC control group.
Frost-Pineda
Kimberly
K
Philip Morris USA, Research Center, Clinical Evaluation, 4201 Commerce Road, Richmond, VA 23234, USA.
Zedler
Barbara K
BK
Oliveri
Douglas
D
Liang
Qiwei
Q
Feng
Shixia
S
Roethig
Hans J
HJ
D000328:Adult; D015415:Biomarkers / Q000032:analysis; D004560:Electricity; D005260:Female; D006358:Hot Temperature; D006801:Humans; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000652:urine*; D012907:Smoking / Q000378:metabolism*; D013638:Tars / Q000737:chemistry; D013997:Time Factors; D014028:Tobacco Smoke Pollution / Q000032:analysis*; D055815:Young Adult
D015415:Biomarkers; D013638:Tars; D014028:Tobacco Smoke Pollution; C024746:tobacco tar; D009538:Nicotine