Tau pathology is the major neuropathological feature of “primary” tauopathies such as microtubule‐associated protein tau (MAPT)‐related frontotemporal dementia (MAPT‐FTD), progressive supranuclear palsy (PSP), corticobasal syndrome (CBS), and Pick's disease. Here, MAPT is linked to supranuclear palsy, progressive, 1.