ABSTRACT
Background: GTAT 3 is a transcription marker for many tumors including breast tumors. Its play an important role in proliferation and differentiation of cell. Aim: The aim of the present study for assessment GATA 3 expression in Iraqi women with breast tumors and its association with histological grades and pathological stages. Materials and Methods: A retrospective study of 72 FFPET of breast tumors, 57/72 were primary breast malignant tumors (infiltrative ductal carcinoma IDC and infiltrative lobular carcinoma ILC), and 15/72 were benign breast tumors. Results: The nuclear staining of (1% or more) of tumor cells was considered positive expression for GATA 3 (cut off value 1%), 47 of 57 (82.5%) of malignant tumors were positive expression of GATA 3, while 3 of 15 (20.0%) of benign tumors were negative expression, (P 0.05). Conclusion: GATA 3 is a specific markers for breast carcinoma and its can be used for diagnosis of the malignant from benign tumors and it's considered a good prognosis marker for breast cancer.