KCNQ2 and Encephalopathy: For example, many of the well recognized developmental and epileptic encephalopathies can now be called by their gene name together with the word encephalopathy,, such as “STXBP1 encephalopathy” and furthermore stated that “when genes are associated with both severe and self-limited pharmacoresponsive epilepsies, such as KCNQ2 or SCN2A , then the term ‘encephalopathy’ can be used to denote the severe form” [11].