From: Mutations in the epidermal growth factor receptor (EGFR) gene in triple negative breast cancer: possible implications for targeted therapy
EGFR IHC staining
Number of cases (Percentage)
Negative (0)
455 (70%)
Weak (1+)
159 (24%)
Moderate (2+)
24 (4%)
Strong (3+)
15 (2%)
Total
653 (100%)