Missense Variants in the A Isoform of <scp> <i>FGF13</i> </scp> as a Novel Cause of Paroxysmal Dyskinesia

FGF13A variants cause a partially caffeine-responsive PxD phenotype with variable cognitive impairment, albeit without epilepsy. © 2026 The Author(s). Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.