ATN1 and neurodegeneration with brain iron accumulation: Among later-onset neurological disorders, those that can present with dystonia also include neuro-acanthocytosis (VPS13A1), neurodegeneration with brain iron accumulation (NBIA), such as PLA2G6-associated neurodegeneration (PLAN), Leber Hereditary Optic Neuropathy (LHON), POLG-related disorders, dentato-rubro-pallidoluysian atrophy (ATN1), and GM1 gangliosidosis [15].