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Articles by Annlia Paganini- Hill
Total Records ( 1 ) for Annlia Paganini- Hill
  Maria M. Corrada , Annlia Paganini- Hill , Daniel J. Berlau and Claudia H. Kawas
  Background Although the apolipoprotein E (APOE) ɛ4 allele is a major genetic risk factor for Alzheimer‘s disease (AD), it is not clear whether this relationship persists among the oldest old. Several European studies suggest that the effect of the APOE ɛ4 allele on dementia and mortality disappears in very old age. We describe the APOE allele and genotype frequencies and examine whether the presence of the APOE ɛ4 or APOE ɛ2 alleles is related to prevalent dementia, incident dementia, and mortality in a population-based cohort of oldest-old participants in the United States. Methods We studied 904 participants aged 90 years and older from The 90+ Study. Eight hundred two (89%) participants were genotyped and included in the prevalent dementia and mortality analyses. The 520 initially nondemented participants were included in the incident dementia analyses and were evaluated for dementia every 6 months. Results The APOE ɛ4 allele was significantly associated with prevalent dementia (odds ratio = 2.06) and AD (odds ratio = 2.37) in women but not in men. The APOE ɛ2 allele was not related to prevalent dementia in either sex. After an average follow-up of 2.4 years, 188 incident dementia cases were identified. Neither the APOE ɛ4 nor the APOE ɛ2 allele was related to incident dementia or AD. Five hundred ten (64%) participants died after an average follow-up of 2.3 years, and their mortality was not related to the presence of either the APOE ɛ2 or APOE ɛ4 allele. Conclusions Our findings suggest that the associations between APOE ɛ4, dementia, and mortality are age dependent, and that APOE ɛ4 no longer plays a role in dementia and mortality at very old ages.
 
 
 
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