Various studies have shown that cancer-relevant RTKs including insulin-like growth factor 1 receptor (IGF1R), epidermal growth factor receptor (EGFR), TEKs (angiopoietin receptors), fibroblast growth factor receptor (FGFR), platelet-derived growth factor receptor α (PDGFRα), and TGF-β receptor (TGF-βR) are located within or proximal to PCs [79]. The gene discussed is EGFR; the disease is cancer.