FGFR2 also known as CD332 is a member of the fibroblast growth factor receptor (FGFR) family, which includes FGFR1-4, and FGFRL1. FGFR1-4 are cell surface membrane receptors that possess tyrosine kinase activity. FGFR2 has two naturally occurring isoforms, FGFR2IIIb and FGFR2IIIc, created by splicing of the third immunoglobulin-like domain. And FGFR2 has important roles in embryonic development and tissue repair, especially bone and blood vessels. Like the other members of the fibroblast growth factor receptor family, these receptors signal by binding to their ligand and dimerisation (pairing of receptors), which causes the tyrosine kinase domains to initiate a cascade of intracellular signals.