CHRNB2 (Cholinergic Receptor Nicotinic Beta 2 Subunit) is a gene that encodes a subunit of the nicotinic acetylcholine receptors. These receptors are essential for neuronal signaling and communication in the nervous system. Variations in CHRNB2 have been linked to epilepsy, especially nocturnal frontal lobe epilepsy, highlighting its role in regulating neuronal excitability and synaptic transmission.