EGFR and breast cancer: And 25 of those 65 proteins are engaged in the “Pathways in cancer” KEGG pathway (hsa05200), 20 proteins in “PI3K-Akt signaling pathway” (hsa04151), 18 proteins in “Proteoglycans in cancer” (hsa05205), and 17 in “EGFR tyrosine kinase inhibitor resistance” (hsa01521), “Breast cancer” (hsa05224), and “Human cytomegalovirus infection” (hsa05163).