Both miR-92a-3p and miR-320a showed higher levels in the FTD group (miR-92a-3p: 0.502 ± 0.15; miR-320a: 0.877 ± 0.29) with respect to CTs (miR-92a-3p: 0.160 ± 0.01; CTvsFTD, p = 0.021; miR-320a: 0.160 ± 0.03; CTvsFTD, p = 0.013), but none of them significantly differed from patients with AD (miR-92a-3p: 0.262 ± 0.10; CTvsAD, p = 0.365; ADvsFTD, p = 0.189; miR-320a: 0.527 ± 0.20; CTvsAD, p = 0.109; ADvsFTD, p = 0.320). Here, TTR is linked to frontotemporal dementia.