A common-ROI encompassing parts of the temporal lobe (i.e., Braak I/IV) can be used for differential diagnosis of dementia patients with [18F]flortaucipir, [18F]RO948, and [18F]MK6240 tau PET, and that using very similar cut-offs of around 1.35 SUVR. Here, MAPT is linked to dementia.