KCNQ2 encodes a voltage-gated potassium channel that is expressed in the brain and is involved in the etiology of epileptic encephalopathy, early infantile (EIEE7, phenotype MIM# 613720), and benign familial neonatal seizures-1 (BFNS1, phenotype MIM#121200) [36,37]. This evidence concerns the gene KCNQ2 and Benign familial neonatal seizures.