MAPT and amyloidosis: When the same regression analyses were done with CN participants only, no significant associations were found (EC tau: pr = 0.069, p = 0.64; EC tau × amyloid: pr = 0.219, p = 0.164; IT tau: pr = 0.072, p = 0.629; IT tau × amyloid: pr = 0.091, p = 0.567) (see Figs. 3 and 4 and Table 5).