Megalencephaly-Capillary Malformation-Polymicrogyria Syndrome, also known as megalencephaly-capillary malformation syndrome, is related to megalencephaly and hemimegalencephaly, and has symptoms including seizures An important gene associated with Megalencephaly-Capillary Malformation-Polymicrogyria Syndrome is PIK3CA (Phosphatidylinositol-4,5-Bisphosphate 3-Kinase Catalytic Subunit Alpha), and among its related pathways/superpathways are Signal Transduction and PIP3 activates AKT signaling. Affiliated tissues include skin and brain, and related phenotypes are macrocephaly and arteriovenous malformation