Apolipoprotein E (Apo E) genotype is a genetic risk factor influencing
the development of Alzheimer's disease (AD). Progressive supranuclear
palsy (PSP), like AD, is a dementing illness with neurofibrillary tan
gles. We determined the frequencies of Apo E alleles in 52 PSP patient
s and 52 age- and gender-matched controls. The distribution of Apo E a
llele frequencies and genotypes showed no difference between PSP and c
ontrols. Apo E allele status does not influence the development of PSP
.