Moreover, both Aβ1-42 and T-tau are detected at intermediate levels, in between normal control and abnormal AD values [26, 27, 57, 58], in non-AD patients, especially in dementia with Lewy bodies (DLB) but also in frontotemporal dementia (FTD), vascular dementia (VaD), and CJD. This evidence concerns the gene MAPT and Alzheimer disease.