The percentage of A-T-decreased with age, and A+ and T+ increased with age in both males and femalesA+ increased more in APOE e4 carriers with age than in noncarriersA+ was the main predictor of lower cognitive performance when considered together with T+T+ was associated with a lower frequency of parkinsonism and probable RBDA + T+ was more common in females than males compared with the A − T− and A − T+ groups. Here, APOE is linked to Parkinsonism.