NEGR1 (Neuronal Growth Regulator 1): NEGR1 is a cell adhesion molecule mainly expressed in the central nervous system. It plays a key role in neuronal growth, differentiation, and synaptic plasticity, supporting the formation and maintenance of neuronal networks. NEGR1 facilitates cell-cell interactions important for communication between neurons and neural tissue structure. Its role in neurodevelopment links it to brain function, and dysregulation or mutations in NEGR1 have been associated with neurodevelopmental disorders and other conditions.