KCNA6 (Kv1.6) is a voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes by forming tetrameric, potassium-selective channels that open and close in response to membrane voltage changes 1. The channel can form both homotetrameric and heterotetrameric complexes with other Kv1 family members, with channel properties depending on subunit composition 2. Pathogenic de novo KCNA6 variants cause early infantile epileptic encephalopathy and neurodevelopmental disorders. Mutations in the S6 helix region show gain-of-function effects, specifically slowing channel deactivation and shifting voltage dependence hyperpolarically, resulting in excessive neuronal excitability 3. More recent findings confirm that loss-of-function KCNA6 mutations also contribute to early-onset developmental epileptic encephalopathy 4. In spinocerebellar ataxia type 3, reduced Kcna6 transcript levels correlate with Purkinje neuron hyperexcitability; restoring KCNA6 expression through antisense oligonucleotide therapy normalizes neuronal firing and motor function 5. Beyond neurological disease, KCNA6 has been identified as a host factor facilitating SARS-CoV-2 entry; viral infection decreased when endogenous KCNA6 was disrupted 6. KCNA6 methylation status has also been associated with cardiac amyloidosis risk in Val122Ile-TTR carriers and glyphosate exposure in environmental health studies 78.