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