MAPT and Lewy body dementia: Previous studies showed that medial temporal atrophy in DLB is associated with amyloid-β pathology [7, 42–44], while posterior brain atrophy is associated with the combined effect of amyloid-β and tau-related pathologies [42], matching the pattern of tau accumulation in the posterior cortex in positron emission tomography studies in DLB [26, 47, 48].