Polymicrogyria, also known as pmg, is related to megalencephaly-capillary malformation-polymicrogyria syndrome and polymicrogyria, bilateral perisylvian, x-linked. An important gene associated with Polymicrogyria is ATP1A2 (ATPase Na+/K+ Transporting Subunit Alpha 2), and among its related pathways/superpathways are Nervous system development and Class I MHC mediated antigen processing and presentation. Affiliated tissues include brain and cortex, and related phenotypes are nervous system and growth/size/body region