By contrast, there were no significant differences between patients with MND, MND + FTD or FTD, collectively, showing any type of tau pathology and those without tau pathology at all, for age at onset (p = 0.493), age at death (p = 0.726) or duration of illness (p = 0.364) (Table 2). This evidence concerns the gene MAPT and mild neurocognitive disorder.