The epidermal growth factor receptor (EGFR) and vascular endothelial growth factor receptor (VEGFR-2) are common receptor tyrosine kinases (RTKs).9 EGFR regulates a wide range of biological processes, including cell survival, proliferation, and migration.10 EGFR levels are dramatically elevated in numerous cancer types. The gene discussed is NTRK1; the disease is cancer.