NEO1 (Neogenin 1): Neogenin 1 is a key cell surface receptor involved in various cellular processes such as cell adhesion, migration, and axon guidance. It is part of the immunoglobulin superfamily and plays a vital role in nervous system development and apoptosis regulation. NEO1 acts as a receptor for netrin-1 and other ligands that regulate axonal growth and neuronal migration, both crucial for brain development. It also contributes to maintaining tissue homeostasis and vascular development. Mutations or dysregulation of NEO1 have been linked to several developmental disorders and diseases, including cancer progression and metastasis.