CSD210904: Study to Assess Actual Use of a Heated Tobacco Product With Four Non-Combusted Cigarette Variants in Current Adult Smokers

Adult smokers will be recruited, and candidate subjects who meet study inclusion criteria and none of the exclusion criteria will give verbal consent for further screening. Candidate subjects will be scheduled to attend an in-person Site Enrollment Visit. Subjects will self-report their ad libitum use of the HTP IP as well as use of combustible cigarettes (CCs) and any other tobacco- or nicotine-containing products (TNPs) on a daily basis using an electronic diary (eDiary). During a 1-week Baseline Assessment Period (BAP), enrolled subjects will record all CC and any other TNP use in the eDiary. At the end of the BAP, subjects will return to the study site for Site Visit 1 (SV1). At this visit, subjects will be provided the HTP IP for the first two weeks of the AUP. During the subsequent 6-week observational AUP, subjects can choose to use the HTP IP (or not). Subjects will be instructed to record all daily TNP and CC use in the eDiary. They will return to the site every two weeks during the AUP for an in-person interview, to complete questionnaires and for product accountability and resupply. As with SV1, at Site Visit 2 and 3, subjects will be able to select their preferred HTP IP variants (if desired) for use during the subsequent 2-week AUP. Point of sale materials will be present during subject interactions at SVs. After Week 6 of the AUP, there will be a final site visit and week-long Close Out Period. In addition to collecting information on daily ad libitum use of HTP IP, TNP and CC use, the study will assess subjective measures for each HTP IP, including product use/misuse and intent to use again (at close of study). Information on intention to quit CC use will be collected at enrollment and at study conclusion. A passive surveillance mechanism will be used to collect information on adverse health experiences.