Confirmation that familial clustering and age of onset in late onset Alzheimer's disease are determined at the apolipoprotein E locus.
We confirm that familial clustering in late onset Alzheimer's disease is associated with the zeta 4 allele of apolipoprotein E. This allele occurs in the great majority (82%) of late onset familial Alzheimer cases. Together with previously published data, it is suggested that the effect of a single zeta 4 allele is to increase the risk of developing AD by an amount equivalent to 5 years and that the effect of zeta 4 homozygosity is to increase the risk of developing AD by an amount equivalent to 10 years of age.
Houlden
H
H
Department of Biochemistry, St. Mary's Hospital Medical School, London, UK.
Crook
R
R
Hardy
J
J
Roques
P
P
Collinge
J
J
Rossor
M
M
D017668:Age of Onset; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D000544:Alzheimer Disease / Q000235:genetics* / Q000378:metabolism; D001057:Apolipoproteins E / Q000235:genetics* / Q000378:metabolism; D005190:Family; D005838:Genotype; D006801:Humans; D008875:Middle Aged; D018570:Risk Assessment
D001057:Apolipoproteins E