title: GSTM1 gene polymorphism as a possible marker for susceptibility to head and neck cancers among Japanese smokers.
abstract: Increased risk of lung cancer has been reported in individuals with glutathione S-transferase M1 (GSTM1) gene deletion, with limited evidence for head and neck (HN) cancer. Here, we report the results of a case-control study in Japanese HN cancer patients (n = 158) and community controls (n = 174). GSTM1 null genotype (GSTM1(-)) was distributed more in smoker patients than in control subjects (56.7% vs. 48.5%) but not in non-smoker patients (48.3%). In smokers, GSTM1(-) was detected at increased frequency in non-larynx cancer (62.7%, odds ratio 1.77, 95% CI 1.04-3.01) but not in larynx cancer (48.1%). In larynx cancer GSTM1(-) was presented at higher frequency in patients < 60 years old than in those > or = 60 years old (78.6% vs. 36.8%). These findings suggest that the GSTM1 gene polymorphism potentially modifies the risk for HN cancer depending on smoking history, the region of cancer and age.
authors.affiliation: Department of Public Health, Yokohama City University School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kihara
authors.forename: M
authors.initials: M
authors.lastname: Kihara
authors.forename: A
authors.initials: A
authors.lastname: Kubota
authors.forename: M
authors.initials: M
authors.lastname: Furukawa
authors.forename: H
authors.initials: H
authors.lastname: Kimura
mesh_terms: D004273:DNA, Neoplasm / Q000032:analysis / Q000235:genetics; D005260:Female; D005819:Genetic Markers; D020022:Genetic Predisposition to Disease; D005838:Genotype; D005982:Glutathione Transferase / Q000235:genetics*; D006258:Head and Neck Neoplasms / Q000209:etiology* / Q000235:genetics*; D006801:Humans; D007527:Isoenzymes / Q000235:genetics*; D007564:Japan; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects* / Q000235:genetics
chemical_list: D004273:DNA, Neoplasm; D005819:Genetic Markers; D007527:Isoenzymes; D005982:Glutathione Transferase