Clinical, neuroimaging and CSF assessments:Assessments for parkinsonism, visual hallucinations, RBD and other clinical core featuresAtrophy: MRIAmyloid-b and tau neurofibrillary tangles were assessed through CSF levels of AB42 and phosphorylated tau (p-tau) using enzyme-linked immunosorbent assays (ELISAs). This evidence concerns the gene MAPT and Parkinson disease.