CBS and Parkinson disease: Genetic screening of major ALS-associated genes was performed in all patients and revealed a p.A383T TARDBP mutation in a sporadic ALS-parkinsonism case (ID: 15) and a (G4C2)nC9orf72 repeat expansion in a PLS patient with neuropsychological features of CBS and family history of Alzheimer's disease-type dementia (ID: 2) (Supplementary Figure 1).