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