EGFR and cancer: Additionally, Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis was performed to enrich the pathways and found that these nodes have a positive correlation with Ras signaling pathway, Proteoglycans in cancer, PI3K-Akt signaling pathway, Pathways in cancer, MAPK signaling pathway, HIF-1 signaling pathway, Gastric cancer, Focal adhesion, ERBB signaling pathway, EGFR tyrosine kinase, inhibitor resistance, Cytokine-cytokine receptor interaction and Adherents junction (Figure 4D).