Abstract:Specifically, the epsilon 4 (ε4) allele increases risk w3-fold when heterozygous and w14-fold when homozygous, as compared to homozygous epsilon 3 (ε3) carriers. Moreover, ε3 homozygosity itself confers w1.6-fold risk versus epsilon 2 (ε2) homozygotes and ε2/ε3 individuals. Despite this strong genetic liability, some APOE-ε4 carriers never develop symptomatic AD or have a very late age of onset, suggesting these resilient individuals may harbor protective alleles. Understanding the pathogenic mechanism behind … Show more
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