We describe the presentation and workup of two brothers with early-onset epileptic encephalopathy who became seizure-free on a ketogenic diet. Extensive testing culminated in whole exome sequencing, which led to the diagnosis of phosphatidyl inositol glycan biosynthesis class A protein (PIGA) deficiency. This familial case highlights the importance of genetic testing for early-onset epileptic encephalopathies and underscores the potential value of a ketogenic diet in the treatment of this condition.
Keywords: Epileptic encephalopathy; Ketogenic diet; PIGA; Whole exome sequencing.
Copyright © 2016 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.