FUS and mild neurocognitive disorder: 361 FTD patients (179 bvFTD, 17 FTD-MND, 36 svPPA, 19 nfvPPA, 4 lvPPA, 42 CBS, 64 PSP), 45 HCs. Definite pathology known in 68 patients (49 FTLD-TDP, 18 FTLD-tau, 1 FTLD-FUS)