MAPT and argyrophilic grain disease: The spectrum of tau pathologies includes neuropathological phenotypes like Pick’s disease (PiD), progressive supranuclear palsy (PSP), corticobasal degeneration (CBD), argyrophilic grain disease (AGD), primary age-related tauopathy (PART), formerly known as neurofibrillary tangle-only dementia (NFT-dementia), and a recently characterized entity called globular glial tauopathy (GGT) [2,4,5,6,7,8,9].