EREG and gastric cancer: Gastric cancer patients with overexpression of EphA1 had poorer outcomes, overall survival and relapse‐free survival than those with low levels of EphA1.34, 35 Epiregulin is a member of the epidermal growth factor (EGF) family, and is overexpressed in human gastric tumor cell lines TMK1 and MKN‐45, as are other EGF family members.36 FGF‐12 is a member of the FGF family, functions in the development of the central and peripheral nervous systems, connective tissue of the skeleton and the myocardia of the heart.