Total microglial load (Iba1-positive), associated negatively with Aβ load in pure AD and mixed DLB + AD (r = -0.40, p < 0.001; r = -0.11, p = 0.012) and positively with p-tau load in pure AD (r = 0.18, p = 0.021). Here, AIF1 is linked to Lewy body dementia.