A Network of Genetic Effects on Non-Demented Cognitive Aging: Alzheimer's Genetic Risk (CLU + CR1 + PICALM) Intensifies Cognitive Aging Genetic Risk (COMT + BDNF) Selectively for APOEɛ4 Carriers. Sapkota S, Dixon RA J Alzheimers Dis. 2018; 62(2):887-900. PMID: 29480189. Abstract Comment Bookmark Recommend Follow Comment | Bookmark | Recommend | Follow