Familial patterns of risk in very late-onset Alzheimer disease.

Abstract excerpt

BACKGROUND: The incidence of Alzheimer disease (AD) peaks after 85 years of age. Although genetic factors are implicated in AD with substantially earlier onset, the familial characteristics of high-incidence very late-onset AD (VLOAD, defined here as AD with onset age >/=85 years) remain unknown. METHODS: We collected information pertaining to the cognitive status and demographics of 809 parents and siblings of...

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