title: A prospective and retrospective analysis of smoking behavior changes in ever smokers with high risk for lung cancer from New Mexico and Pennsylvania.
abstract: Cigarette smoking is the leading preventable cause of death worldwide. The aim of this study is to conduct a prospective and retrospective analysis of smoking behavior changes in the Lovelace Smokers Cohort (LSC) and the Pittsburgh Lung Screening Study cohort (PLuSS). Area under the curve (AUC) for risk models predicting relapse based on demographic, smoking, and relevant clinical variables was 0.93 and 0.79 in LSC and PLuSS, respectively. The models for making a quit attempt had limited prediction ability in both cohorts (AUC≤0.62). We identified an ethnic disparity in adverse smoking behavior change that Hispanic smokers were less likely to make a quit attempt and were more likely to relapse after a quit attempt compared to non-Hispanic Whites. SNPs at 15q25 and 11p14 loci were associated with risk for smoking relapse in the LSC. Rs6495308 at 15q25 has a large difference in minor allele frequency between non-Hispanic Whites and Hispanics (0.46 versus 0.23, P<0.0001) and was associated with risk for ever relapse at same magnitude between the two ethnic groups (OR=1.36, 95% CI=1.10 to 1.67 versus 1.59, 95% CI=1.00 to 2.53, P=0.81). In summary, the risk prediction model established in LSC and PLuSS provided an excellent to outstanding distinguishing for abstainers who will or will not relapse. The ethnic disparity in adverse smoking behavior between Hispanics and non-Hispanic Whites may be at least partially explained by the sequence variants at 15q25 locus that contains multiple nicotine acetylcholine receptors.
authors.affiliation: Lung Cancer Program, Lovelace Respiratory Research Institute Albuquerque, NM.
authors.forename: Shuguang
authors.initials: S
authors.lastname: Leng
authors.affiliation: Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh Pittsburgh, PA.
authors.forename: Joel L
authors.initials: JL
authors.lastname: Weissfeld
authors.affiliation: Lung Cancer Program, Lovelace Respiratory Research Institute Albuquerque, NM.
authors.forename: Maria A
authors.initials: MA
authors.lastname: Picchi
authors.affiliation: Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine Pittsburgh, PA.
authors.forename: Mindi A
authors.initials: MA
authors.lastname: Styn
authors.affiliation: Mind Research Network and Lovelace Biomedical and Environmental Research Institute Albuquerque, NM.
authors.forename: Eric D
authors.initials: ED
authors.lastname: Claus
authors.affiliation: Mind Research Network and Lovelace Biomedical and Environmental Research Institute Albuquerque, NM.
authors.forename: Vincent P
authors.initials: VP
authors.lastname: Clark
authors.affiliation: Lung Cancer Program, Lovelace Respiratory Research Institute Albuquerque, NM.
authors.forename: Guodong
authors.initials: G
authors.lastname: Wu
authors.affiliation: Lung Cancer Program, Lovelace Respiratory Research Institute Albuquerque, NM.
authors.forename: Cynthia L
authors.initials: CL
authors.lastname: Thomas
authors.affiliation: Department of Preventive Medicine, Keck School of Medicine, University of Southern California Los Angeles, CA.
authors.forename: Frank D
authors.initials: FD
authors.lastname: Gilliland
authors.affiliation: Department of Epidemiology, Graduate School of Public Health, University of PittsburghPittsburgh, PA; Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer InstitutePittsburgh, PA.
authors.forename: Jianmin
authors.initials: J
authors.lastname: Yuan
authors.affiliation: Department of Pharmacology & Chemical Biology, Hillman Cancer Center of The University of Pittsburgh Medical CenterPittsburgh, PA; Department of Pharmacology, University of MinnesotaMinneapolis, MN.
authors.forename: Jill M
authors.initials: JM
authors.lastname: Siegfried
authors.affiliation: Lung Cancer Program, Lovelace Respiratory Research Institute Albuquerque, NM.
authors.forename: Steven A
authors.initials: SA
authors.lastname: Belinsky
keywords: Smoking behavior; ethnicity; risk prediction model; single nucleotide polymorphism