SNCA and REM sleep behavior disorder: The remaining 833 had synucleinopathies or related conditions, including 337 (40.4%) with PD, 149 (17.9%) with unspecified α-synucleinopathy, 126 (15.1%) with MSA, 76 (9.1%) with DLB, 36 (4.3%) with type 1 Gaucher Disease, 33 (4.0%) with PAF, 28 (3.4%) with rapid eye movement sleep behavior disorder (RBD), 18 (2.2%) with Progressive Supranuclear Palsy (PSP), 12 (1.4%) with non α-synuclein-related autonomic failure, 10 (1.2%) with atypical Parkinsonism, and 8 (1.0%) with Corticobasal Syndrome (CBS) (Figure 2B).