Polymicrogyria, Bilateral Perisylvian, X-Linked, also known as bilateral perisylvian polymicrogyria, is related to megalencephaly-polymicrogyria-postaxial polydactyly-hydrocephalus syndrome and polymicrogyria. An important gene associated with Polymicrogyria, Bilateral Perisylvian, X-Linked is TUBA1A (Tubulin Alpha 1a), and among its related pathways/superpathways are Golgi-to-ER retrograde transport and COPI-independent Golgi-to-ER retrograde traffic. Affiliated tissues include cortex and brain, and related phenotypes are abnormality of neuronal migration and bilateral perisylvian polymicrogyria