Prognostic significance of immunohistochemical expression profiles of some antigens in cervical cancer

Abstract

Aim. To evaluate the prognostic significance of immunohistochemical expression profile of some antigens in patients with cancer of the cervix. Methods. Analysed was the data of primary medical records (medical history and hospital records) and information of the Belarusian Cancer Registry of the 100 women who received special treatment in the Republican Scientific and Practical Centre of Oncology and Medical Radiology named after Alexandrov and in Grodno Regional Clinical Hospital. Histological and immunohistochemical studies of the content of markers Ki-67, Her2/neu, Bcl-2 and p53 in tumors (archival paraffin blocks) were performed. Results. Low level of expression of Ki-67 was detected in 44, moderate - in 19, high - in 37 of patients. Low levels of expression of the mutant p53 protein was detected in 44, moderate - 16, high - 29 of women. Low level of expression of Bcl-2 antigen was found in 92, moderate - in 6, high - in 2 patients. The absence of relationship between the level of the protein HER2/neu and stage cervical cancer was showen. The most prognostic significance had the proliferative activity (the proportion of Ki-67-positive cells), since an increase of this index by 1 unit decreased overall survival observed in 0.9884 times. Multivariate analysis of the cumulative impact of the studied oncogenes on overall survival observed in view of the degree of spread of the tumor process has allowed to develop a formula for calculating the risk of disease progression in a specific clinical observations. Conclusion. The expression of markers Ki-67, p53, Bcl-2, in conjunction with the degree of tumor spread are prognostic criteria of cervical cancer.

Keywords

Ki-67 / Bcl-2 / cervical cancer / cancer markers / Ki-67 / p53 / Bcl-2 / immunohistochemistry

RIGHTS & PERMISSIONS

Kosenko I.A., Litvinova T.M., Smolyakova R.M., Vasilevskiy A.P., Pischik N.N.