Abstract:Epiregulin (EREG), a member of the epidermal growth factor (EGF) protein superfamily, has been confirmed to have increased expression in various types of cancer and plays a significant role in the occurrence, proliferation, migration, invasion, and drug resistance of tumors. Research indicates that EREG, as a ligand of the EGF family, can bind to corresponding receptors to activate downstream signaling pathways, such as the RAS/RAF/MEK, JAK/STAT3, and PI3K/AKT pathways, thereby regulating the biological behavior of tumors. Additionally, the role of EREG in the tumor microenvironment has been elucidated. This provides new directions for studying its role in the occurrence and therapeutic resistance of cancer. This article comprehensively analyzes the role and mechanism of EREG in common cancers, providing a reference and theoretical basis for the subsequent search for novel molecular targets