The KEGG pathway analysis determined that the DEPs were enriched in several other pathways in addition to the cytokine–cytokine receptor interaction pathway, including the pathways for PI3K–Akt, MAPK, and RAS signaling, proteoglycans in cancer, and EGFR tyrosine kinase inhibitor resistance (Figure 3(b)). The gene discussed is EGFR; the disease is cancer.