ERBB4 (Erb-B2 Receptor Tyrosine Kinase 4): ERBB4, a member of the epidermal growth factor receptor (EGFR) family, serves as a crucial regulator in various cellular processes. This transmembrane receptor tyrosine kinase is intricately involved in signaling pathways governing cell proliferation, differentiation, and survival. Its role extends beyond cellular processes to influence organ development, synaptic plasticity, and cardiac function, among others. ERBB4's activation triggers downstream cascades that modulate gene expression and cellular behavior, contributing significantly to tissue homeostasis and development. Moreover, its dysregulation has been implicated in diverse pathologies, including cancer progression, neurological disorders, and cardiac abnormalities. The multifaceted functions of ERBB4...