GATA3 and neoplasm: The IHC results of this patient’s tumor tissue exhibited ER (+), PR (+), CK7 (+), GATA-3 (+), E-cadherin (+), and GCDFP-15 (+) tumor cells, which, in combination with patient’s breast examination records strongly proved that the gastric lesions were not the primary ones, rather they were breast metastasized secondary lesions.