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No Abstract Aviable 35438212

Objective: To investigate the polymorphism rates and possible roles of glutathione-s-transferase M1, T1, and P1 gene polymotphisms in the predisposition to endometrial cancer in Caucasian women. Materials and Methods: Serum samples and medical records were collected from 53 Caucasian women with newly diagnosed endometrial cancer and 67 women of the same race without any known history of cancer. Multiplex polymerase chain reaction (PCR) analysis was used to assess glutathione-s-transferase M1 (GSTM1) and T1 gene polymorphisms. Polymerase chain reaction - restriction fragment length polymorphism (PCR-RFLP) method was used in salvage of GSTP1 gene polymorphism. Results: Frequencies of GSTM1 and GSTT1 null genotypes were not significantly different between the controls and patients with endometrial cancer (56.7% vs 52.8%, p = 0.671; 32.8% vs 26.4%, p = 0.574, respectively). The authors were not able to demonstrate any association between neither GSTP1 genotypes nor allele frequencies and endometrial carcinoma in the population studied (p = 0.310, p = 0.318, respectively). Moreover, no significant association could be demonstrated with GSTM1 and GSTT1 polymorphisms and clinical stages of endometrial cancer. Nevertheless, there was a significant difference between the frequencies of GSTP1 AA and GG genotypes in relation to Stage I disease when compared with advanced stages of endometrial carcinoma (p = 0.03). In addition, no association was found between polymorphisms of GST suspergene family and non-endometrioid type endometrial carcinomas. Conclusion: These results suggest that GSTT1, GSTM1, and GSTP1 polymorphisms are not associated with endometrial cancer in the Caucasian population.

The factors leading to the development of Chronic Myeloid Leukemia (CML) are not fully known. Associations between polymorphisms for genes encoding Glutathione S-transferase (GST) enzymes involved in Phase II detoxification reactions and susceptibility to some cancers have been shown in several studies. The aim of the present study was to investigate the influence of the GSTP1 (IIe105Val) gene polymorphism on human susceptibility to CML. Seventy-one CML patients and 67 control subjects with no cancer history were enrolled in our study . The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was used to identify the GSTP1 (lle105Val) gene polymorphism. Genotypes were determined according to the bands that formed in agarose gels via gel electrophoresis. Leukocytes in the CML patient group were significantly different from those in the control group (p=0.0001). The frequency of the GSTP1 Val allele was found to be 22% in CML patients and 31% in controls. However, no statistical variation was found to exist between controls and patients in terms of the GSTP1 Val allele frequency (p=0.199). The relationship between the GSTP1 (IIe105Val) gene polymorphism and CML is not fully understood. Our results provide no evidence of a relationship between the GSTP1 (IIe105V al) gene polymorphism and susceptibility to CML in Turkish patients. However, these findings should be confirmed in studies with larger sample sizes.