APOE and sleep apnea syndrome: Similar to our current results, a study of 143 community-dwelling participants aged ≥70 years12 found no significant relationship between amyloid-PET burden and nighttime sleep duration, daytime sleep duration, 24-h sleep duration, naps, restless leg syndrome, daytime sleepiness, insomnia symptoms or sleep apnoea risk before and after adjustment for APOE e4 and depressive symptoms using logistic regression models.