APOE and Emotional lability: Among these, two declined to participate whereas 13 did not meet inclusion criteria due to negative amyloid PET results (n = 4), presence of an intracardiac shunt (n = 1), high Hachinski scale score (n = 1), MMSE (n = 1), PTT (n = 1), APOE Ɛ4 homozygosity (n = 4), inability to communicate (n = 1), and/or emotional instability (n = 1).