EGFR and cancer: The PPI gene set was found to be enriched in different carcinogenic pathways, including in cytokine–cytokine receptor interactions, the JAK-STAT signaling pathway, pathways in cancer, the TNF signaling pathway, chemokine signaling pathway, EGFR tyrosine kinase inhibitor resistance, proteoglycans in cancer, TGF-beta signaling pathway and microRNAs.