Early infantile epileptic encephalopathies (EIEE) are characterized by intractable infantile-onset epilepsy which fail to conventional antiepileptic drugs, accompanying progressive intellectual disability (ID), electroencephalographic abnormalities resulted in cerebral dysfunction. Many of the EIEEs are now known to have identifiable molecular genetic basis [
1]. Germline truncating mutations of PIGA (Phosphatidylinositol N acetylglucosaminyltransferase subunit-A) gene are related with a X-linked EIEE, and also named as multiple congenital anomalies hypotonia-seizures syndrome two and Ferro-Cerebro-Cutaneous syndrome (FCCS) [
2‐
4]. …