TARDBP and early-onset autosomal dominant Alzheimer disease: Corticobasal syndrome had various underlying pathologies, with the most prevalent being CBD at 33.3%, followed by PSP at 29.2%, Alzheimer’s disease at 12.5%, frontotemporal lobar degeneration with TAR DNA-binding protein 43 pathology (FTLD-TDP-43) at 6.3%, globular glial tauopathy at 4.2%, dementia with Lewy bodies at 4.2%, and other conditions at 10.4%.