EGFR and endometrioid adenocarcinoma: EGFR protein was highly expressed in G1 and G2 endometrioid carcinoma (p = 0.014, χ2 (2) = 8.6) whereas HER-2 was almost evenly expressed in G1, G2, and G3 tumors (P = 0.52, χ2 (2) = 1.5).