Spinocerebellar Ataxia, X-Linked 3, also known as scax3, is related to spinocerebellar ataxia, x-linked 5 and spinocerebellar ataxia 18, and has symptoms including cerebellar ataxia, lethargy and seizures. An important gene associated with Spinocerebellar Ataxia, X-Linked 3 is ATP2B3 (ATPase Plasma Membrane Ca2+ Transporting 3), and among its related pathways/superpathways are CREB Pathway and Response to elevated platelet cytosolic Ca2+. Related phenotypes are ataxia and hypotonia