EGFR & IGF-1R

This receptor binds insulin-like growth factor with a high affinity. It has tyrosine kinase activity. The insulin-like growth factor I receptor plays a critical role in transformation events. Cleavage of the precursor generates alpha and beta subunits. It is highly overexpressed in most malignant tissues where it functions as an anti-apoptotic agent by enhancing cell survival. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene.

EGFR: Functions as a receptor tyrosine kinase controlling cell growth and differentiation. It activates multiple signaling cascades upon ligand binding. The protein is widely expressed in epithelial tissues. Mutations drive oncogenesis.