Corticobasal syndrome (CBS) includes multiple underlying pathologies aside from CBD, such as PSP, Alzheimer’s disease, frontotemporal dementia (FTD), globular glial tauopathy, Lewy body disease (LBD), and Creutzfeldt–Jakob disease (CJD) [3]; however, most of those pathologies remain connected with tau. Here, MAPT is linked to frontotemporal dementia.