Klin Onkol 2012; 25(4): 282-286. DOI: 10.14735/amko2012282.
Summary
Background: Evaluation of the importance of molecular genetic factors in endometrial carcinoma based on our review of available literature, and in the case of K-ras mutation based on our own data. The aim of the original part of our study was to compare the presence of K-ras mutation in early stages of endometroid carcinoma with normal endometrium and evaluate the role of the mutation in endometrial carcinogenesis. Material and methods: Molecular biological analysis was performed to detect K-ras mutation in samples of endometrial tissue obtained from women treated in the past at the Department of Obstetrics and Gynecology, University Hospital Hradec Kralove. The detection was made from DNA isolated from paraffin-embedded sections using K- ras StripAssay ™, ViennaLab Diagnostics GmbH. Results: K-ras mutation was found in 7 out of 30 specimens of endometroid carcinoma in stage I (23%) and in 3 of 20 specimens of normal endometrium in the control group (15%). K-ras mutations were more frequent in IA stage and grade 1 of endometroid carcinoma. Conclusion: The importance of molecular genetic factors in endometrial carcinoma differs depending on the type of carcinoma. In more common type 1 endometroid cancer, published data are not as clear as in type 2 carcinoma, in which prevalence of alteration of p53 reaches 90%. Results of our study performed on local population of women support the theory about the possible role of K-ras mutation as an early event in the process of endometrial carcinogenesis in type 1 tumors.
