Glutathione S-transferase M1, T1, and P1 gene polymorphism in laryngeal squamous cell carcinoma

To investigate the influence of the glutathione S-transferase (GST) M1, T1, and P1 genotypes on the laryngeal squamous cell carcinoma risk. The study group consisted of 42 white patients with laryngeal squamous cell carcinoma (39 of them were male, mean age: 53, range: 37–67 and 3 of them were female, mean age: 47, range: 32–55) and 89 control subjects (nonsmokers = 47, smokers = 42) (58 male and 31 female, mean age: 51, range: 30–72). DNA samples were isolated from blood samples using high pure polymerase chain reaction (PCR) Template Preparation Kit. The detection of GST T1, GST M1, and P1 polymorphisms were detected by using real-time PCR. Gene polymorphisms at GST M1 and P1 were not significantly different in patient and control groups. However, GST T1 null type significantly increased in laryngeal cancer patients when compared with the nonsmoking controls ( P = .04). There was a significant association between GST T1 null genotype and laryngeal squamous cell carcinoma. However the potential role of GSTs as markers of susceptibility to laryngeal carcinoma needs further studies in a larger number of patients.