NEO1 (Neogenin 1): Neogenin 1 is a critical cell surface receptor involved in various cellular processes, including cell adhesion, migration, and axon guidance. It belongs to the immunoglobulin superfamily and plays a central role in nervous system development and the regulation of apoptosis. NEO1 functions as a receptor for netrin-1 and other ligands that control axonal growth and neuronal migration, which are essential for brain development. Additionally, it is involved in maintaining tissue homeostasis and vascular development. Mutations or dysregulation of NEO1 have been associated with a range of developmental disorders and diseases, including cancer progression and metastasis.