MAPT and progressive supranuclear palsy: FTLD-tau encompasses genetic cases with tau inclusions due to mutations in microtubule-associated protein tau (MAPT) (FTLD-MAPT), but also sporadic cases including those with Pick bodies (FTLD-Picks), progressive supranuclear palsy (FTLD-PSP) or corticobasal degeneration (FTLD-CBD).