There were no HER2 2+ but three (23 %) HER2 negative tumors: one case (8 %) was scored as 1+ with a 50 % weak, incomplete membranous staining and two score 0 cases (15 %) with incomplete weak membranous immunohistochemical reaction in less than 10 % of the tumor cells. Here, ERBB2 is linked to neoplasm.