X-linked infantile spasms
X-linked infantile spasms is characterized by early-onset generalized seizures, hypsarrhythmia, and mental retardation.
Etiology
mutations in the aristaless-related homeobox gene (ARX) (Xp21.3-p22.1)
mutations in the serine-threonine kinase 9 (STK9) gene (Xp22.3) (#12736870#)