Abstract
Breast cancer is the most frequent cancer in which the mortality rate could be decreased by proper management. The GATA3 transcription factor is one of the most frequently mutated genes in breast cancer. We studied the immunohistochemical (IHC) expression of estrogen and progesterone receptor, human epidermal growth factor receptor 2, and GATA-3 in 166 radical/partial mastectomy specimens having different histologic grades and stages of breast carcinoma. All samples were obtained from the pathology department of Sina hospital in Tehran-Iran from 2010 to 2016. There was a direct relationship between the luminal subtype carcinoma and higher GATA-3 expression (P-value: 0.001) and between triple-negative carcinoma and lower GATA-3 expression (P-value: 0.001). Moreover, there was a direct relationship between the metastasis rate and the tumor's grade with GATA-3 staining (P-value: 0.000 and 0.001, respectively). GATA-3 expression is related to the histopathologic and prognostic factors. GATA3 can be introduced as an important predictor in breast cancer patients.
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