In an exploratory clinicopathological analysis, we examined available baseline MMSE scores in our largest FTLD-tau pathology group (PSP) across GT-38 defined AD-tau Braak stages (Braak B0 n=6 median/IQR=28.5/27.25-29.25 ; Braak B1 n=18, median/IQR=26.0/22.5-27.0; Braak B2/3 n=9, median/IQR=27.0/25.5-28.5) and found a significant association of AD Braak stage with lower MMSE score at baseline (H=6.8, df=2, p=0.03). This evidence concerns the gene MAPT and Alzheimer disease.