Analysis of the molecular profile of endometrial cancer depending on microsatelite instability

The absence of precise classification and effective predictive biomarkers in endometrial cancer (EC) leads to suboptimal treatment decisions and outcomes, underscoring the urgent need for improved diagnostic and therapeutic approaches. Endometrial cancer represents 4.8 % of the cases of malignant tumors, being in the sixth place worldwide in terms of incidence of malignant tumors in women. The treatment of endometrial cancer, especially stage I, which affects 70-75 % of patients, remains a subject of debate. According to the current European Society of Medical Oncology (ESMO) recommendations, for the management of patients with endometrial cancer, the treatment strategy is influenced by the results of risk stratification. Regarding endometrial cancer, a large number of prognostic factors are described, which create certain difficulties in their application in clinical practice. Most factors are morphological, and information about them is obtained after surgery on the basis of a standard histological examination. Of particular interest is the study of risk factors in the case of individual endometrial cancer variants. The molecular classification of endometrial tumors has the potential to become an indispensable element of histopathological classification, which would contribute to determining the prognosis and treatment strategies of the disease. In addition, it can lead to the development of a new targeted therapy, as well as to the implementation of molecular diagnostic tests for the detection of endometrial cancer in the early stages, when the prognosis is much more favorable. Despite the large amount of research which focuses on the study of the biological and molecular aspects of endometrial cancer, currently none of the tumor markers is recommended for widespread clinical use in endometrial cancer because there is insufficient information concerning their application into clinical practice.