title: Copy number variations of chromosome 17p13.1 might be linked to high risk of lung cancer in heavy smokers.
abstract: Lung cancer is the most common cause of cancer death worldwide. Smoking is known as the strongest single factor in the development of lung cancer. However, there are inherited genetic factors that cause different responses to cigarette smoking exposure among individuals. We tried to identify these differences in heavy smokers by examining copy number variations (CNVs) between lung cancer patients and healthy controls. Analysis by array comparative genomic hybridization which was tested with 20-person training set (10 lung cancer patients, 10 healthy controls) showed 26 significant (adjusted P < 0.05) clones with either copy number gains or losses. Three genes, KCTD11, FGF11, and PTPRH on chromosomal regions 17p13.1 (KCTD11 and FGF11) and 19q13.42 (PTPRH), were selected (adjusted P < 0.001) and tested by real-time quantitative PCR with 34 healthy controls and 54 lung cancer patients. KCTD11 on the chromosomal region 17p13.1 showed significant high odds ratio (OR = 16.0) in heavy smokers, implying that this is a susceptibility region for lung cancer in this group. Therefore, CNVs of 17p13.1 is a promising candidate to identify individuals with a high genetic risk for the development of lung cancer.
authors.affiliation: Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon 302-718, Republic of Korea.
authors.forename: Minhyeok
authors.initials: M
authors.lastname: Lee
authors.forename: Yeiwon
authors.initials: Y
authors.lastname: Lee
authors.forename: Hyun-Jung
authors.initials: HJ
authors.lastname: Cho
authors.forename: Jeeyoung
authors.initials: J
authors.lastname: Hong
authors.forename: Sun-Jung
authors.initials: SJ
authors.lastname: Kwon
authors.forename: Chang-Gyo
authors.initials: CG
authors.lastname: Park
authors.forename: Hoi-Young
authors.initials: HY
authors.lastname: Lee
authors.forename: Ji-Woong
authors.initials: JW
authors.lastname: Son
authors.forename: Jaeku
authors.initials: J
authors.lastname: Kang
mesh_terms: D016022:Case-Control Studies; D045744:Cell Line, Tumor; D002886:Chromosomes, Human, Pair 17 / Q000235:genetics*; D016000:Cluster Analysis; D055028:Comparative Genomic Hybridization; D056915:DNA Copy Number Variations / Q000235:genetics*; D015972:Gene Expression Regulation, Neoplastic; D005787:Gene Frequency / Q000235:genetics; D020022:Genetic Predisposition to Disease; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics*; D016017:Odds Ratio; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D060888:Real-Time Polymerase Chain Reaction; D012307:Risk Factors; D012907:Smoking / Q000235:genetics*
chemical_list: D012333:RNA, Messenger