title: Association of susceptibility to the development of lung adenocarcinoma with the heme oxygenase-1 gene promoter polymorphism.
abstract: Heme oxygenase-1 (HO-1) acts in cytoprotection against oxidants and aromatic hydrocarbons in cigarette smoke. A (GT)(n) dinucleotide repeat in the 5'-flanking region of the human HO-1 gene (alias HMOX1) reduces HO-1 inducibility and shows length polymorphism, which is grouped into three classes: class S (<27 GT), class M (27-32 GT), and class L (>/=33 GT) alleles. To investigate the correlation between the HO-1 gene polymorphism and the development of lung adenocarcinoma, we screened 151 Japanese patients with lung adenocarcinoma and 153 control subjects. Patients and control subjects were frequency-matched by age, gender, smoking history and proportion of chronic pulmonary emphysema. The proportion of class L allele frequencies, as well as that of genotypic frequencies in L allele carriers (LL, LM, and LS), were significantly higher in patients with lung adenocarcinoma than those of control subjects. The adjusted odds ratio (OR) for lung adenocarcinoma with class L allele vs non-L allele (M+S) was 1.6 [95% confidence interval (CI) 1.0-2.5, P=0.03] and that with L allele carriers vs. non-L allele carriers was 1.8 (95% CI 1.1-3.0, P=0.02). Furthermore, the risk of lung adenocaricinoma for L allele carriers versus non-L allele carriers was much increased in the group of male smokers (OR=3.3, 95% CI 1.5-7.4, P=0.004). However, in the female non-smokers, the proportion of L allele carriers did not differ between patients and control subjects (OR=0.93, 95% CI 0.4-2.0, P=0.85). These findings suggest that the large size of a (GT)(n) repeat in the HO-1 gene promoter may be associated with the development of lung adenocarcinoma in Japanese male smokers.
authors.affiliation: Department of Geriatric and Respiratory Medicine, Tohoku University School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
authors.forename: Akiko
authors.initials: A
authors.lastname: Kikuchi
authors.forename: Mutsuo
authors.initials: M
authors.lastname: Yamaya
authors.forename: Satoshi
authors.initials: S
authors.lastname: Suzuki
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Yasuda
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kubo
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Nakayama
authors.forename: Masashi
authors.initials: M
authors.lastname: Handa
authors.forename: Takahiko
authors.initials: T
authors.lastname: Sasaki
authors.forename: Shigeki
authors.initials: S
authors.lastname: Shibahara
authors.forename: Kiyohisa
authors.initials: K
authors.lastname: Sekizawa
authors.forename: Hidetada
authors.initials: H
authors.lastname: Sasaki
mesh_terms: D024506:5' Flanking Region; D000230:Adenocarcinoma / Q000235:genetics*; D000368:Aged; D016022:Case-Control Studies; D018900:Dinucleotide Repeats; D004198:Disease Susceptibility; D005260:Female; D005787:Gene Frequency; D006419:Heme Oxygenase (Decyclizing) / Q000235:genetics*; D051547:Heme Oxygenase-1; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics*; D008297:Male; D008565:Membrane Proteins; D008875:Middle Aged; D018307:Neoplasms, Squamous Cell / Q000235:genetics*; D011110:Polymorphism, Genetic; D011401:Promoter Regions, Genetic; D011656:Pulmonary Emphysema / Q000150:complications; D012907:Smoking
chemical_list: D008565:Membrane Proteins; C496541:HMOX1 protein, human; D006419:Heme Oxygenase (Decyclizing); D051547:Heme Oxygenase-1