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Gene Dose of Apolipoprotein E Type 4 Allele and the Risk of Alzheimer's Disease in Late Onset Families

1993/08/13 by E. H. Corder, Elizabeth H. Corder, Ann M. Saunders +12 · 87 citations
Medicine · Neuroscience · #Alzheimer's disease research and treatments #Nuclear Receptors and Signaling #Cholinesterase and Neurodegenerative Diseases

paper · doi:10.1126/science.8346443

Abstract

The apolipoprotein E type 4 allele (APOE-epsilon 4) is genetically associated with the common late onset familial and sporadic forms of Alzheimer's disease (AD). Risk for AD increased from 20% to 90% and mean age at onset decreased from 84 to 68 years with increasing number of APOE-epsilon 4 alleles in 42 families with late onset AD. Thus APOE-epsilon 4 gene dose is a major risk factor for late onset AD and, in these families, homozygosity for APOE-epsilon 4 was virtually sufficient to cause AD by age 80.

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