title: Relation of glutathione S-transferase genotypes (GSTM1 and GSTT1) to laryngeal squamous cell carcinoma risk.
abstract: The purpose of the present study was to investigate GSTM1 and GSTT1 genotypes by using multiplex polymerase chain reaction (PCR) in patients with laryngeal squamous cell carcinoma (LSCC). The genotypes of 110 patients with LSCC and of 197 healthy subjects as the control group were determined by PCR analysis for GSTM1 and GSTT1 genes. Results showed that frequencies of GSTM1-null, GSTT1-null, and both GSTs-null genotypes were 51.8, 30, and 16.4%, respectively, in the patients with LSCC and 37.6, 15.7, and 5.6% in the control group. There was a significant difference between the genotype distributions of all GSTs in patients and in control groups (P < 0.05). The results support the hypothesis that null genotypes of GSTM1 and GSTT1 can reduce detoxification capacity of GSTs as members of the xenobiotic enzyme system. GSTM1-null, GSTT1-null, and both GSTs-null genotypes were more common in the patients with LSCC than in the control group. Patients with both GSTs-null genotypes had the highest risk for supraglottic LSCC in the early period, even if they were light-to-medium smokers. Investigation and determination of the genetic basis of LSCC may contribute to detection of risk groups and to prevent LSCC in the population.
authors.affiliation: Department of Medical Genetics, Selçuk University, Meram Medical Faculty, Vali Izzet Pasa Caddesi, Konya 42090, Turkey. yaseminsena@hotmail.com
authors.forename: Hasan
authors.initials: H
authors.lastname: Acar
authors.forename: Kayhan
authors.initials: K
authors.lastname: Ozturk
authors.forename: M Hamza
authors.initials: MH
authors.lastname: Muslumanoglu
authors.forename: M Selman
authors.initials: MS
authors.lastname: Yildirim
authors.forename: Tulin
authors.initials: T
authors.lastname: Cora
authors.forename: Oguz
authors.initials: O
authors.lastname: Cilingir
authors.forename: Bedri
authors.initials: B
authors.lastname: Ozer
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000428:Alcohol Drinking / Q000009:adverse effects; D002294:Carcinoma, Squamous Cell / Q000235:genetics*; D016022:Case-Control Studies; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D005982:Glutathione Transferase / Q000235:genetics*; D006801:Humans; D007822:Laryngeal Neoplasms / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects
chemical_list: D005982:Glutathione Transferase; C413545:glutathione S-transferase T1