MAPT and Huntington disease: For this, we used 4F3 (Table 1), a monoclonal antibody that specifically targets truncated tau proteins ending C-terminally at D314, to detect Δtau314 proteins in the prefrontal cortex (BA 8) of five HD patients and five non-HD individuals, a cohort of the HUB-ICO-IDIBELL Biobank, Spain (Additional file 1: Table S1).