Pearls & Oy-sters: Levodopa-Responsive Adult NCL (Type B Kufs Disease) Due to CLN6 Mutation

Kufs disease (KD), adult neuronal ceroid lipofuscinosis (NCL), differs from its common childhood forms by its late onset and preserved vision and is subclassified based on phenotype as type A, manifesting as progressive myoclonus epilepsy (PME), and type B, manifesting as dementia with motor involvement.