KCNK2 (Potassium Two Pore Domain Channel Subfamily K Member 2): KCNK2 is a gene that encodes a protein forming part of a potassium channel. This channel helps regulate the electrical activity of neurons and plays a key role in controlling neuronal excitability. KCNK2 channels are important for physiological processes such as sleep regulation and anaesthesia. Mutations or dysfunctions in KCNK2 have been linked to neurological conditions like epilepsy and paroxysmal movement disorders.