Interestingly, we observed, only in the group of AD patients, positive correlations between Aβ42 and miR-30b-5p (r = 0.67, p = 0.011) and between h-tau and miR-223-3p (r = 0.62, p = 0.026) (Figure 5). The gene discussed is MAPT; the disease is Alzheimer disease.