Fig. 1

EGFR expression in TNBC cell lines and TNBC patients. a Quantitative analysis of EGFR transcript expression levels in non-TNBC and TNBC cell lines using a publicly available microarray dataset (GSE41313). Statistical significance was determined by Student’s t-test; ^**P < 0.01. b EGFR protein expression in the indicated breast cancer cells. c Kaplan–Meier plot of overall survival of patients with TNBC. Patients were divided into 2 groups, high EGFR expression vs. low EGFR expression according to EGFR mRNA expression level (left) and protein expression level (right). EGFR epidermal growth factor receptor, TNBC triple-negative breast cancer