MAPT and frontotemporal dementia: Hassan and coworkers reported 3 patients with PSP‐FTD who had initial behavioral abnormalities, followed years later with motor symptoms suggestive of PSP.4 Respondek and coworkers described 12 patients with clinical features of FTD in a multicenter study of 100 autopsy‐confirmed PSP patients, but did not include details on the nature or distribution of tau pathology.5 Because the main clinical phenotype of FTD is behavioral change, we hypothesized that frontotemporal pathology would correlate with these symptoms.