title: Genetic studies on an Alzheimer clinic population.
abstract: All patients attending the Clinic for Alzheimer Disease and Related Disorders have detailed family histories taken by a geneticist. To date, genetic histories are available for 446 consecutive, unrelated individuals. Of these, 151 (33.9%) are diagnosed as having "probable" (N = 141) or "autopsy-confirmed" (N = 10) Alzheimer disease according to recognized criteria. This data base represents a relatively unselected population with respect to more than one person in the family having dementia. Seventy-one of these 151 index cases (47.0%) have a positive family history of dementia, of which 8 (5.3%) may represent the familial (autosomal dominant) form of Alzheimer disease (FAD). Age-corrected empiric recurrence risks for Alzheimer disease/dementia were calculated for first-degree relatives of these 151 index cases using the Kaplan-Meier lifetable method.
authors.affiliation: Department of Medical Genetics, University of British Columbia, Vancouver, Canada.
authors.forename: A D
authors.initials: AD
authors.lastname: Sadovnick
authors.forename: M E
authors.initials: ME
authors.lastname: Irwin
authors.forename: P A
authors.initials: PA
authors.lastname: Baird
authors.forename: B L
authors.initials: BL
authors.lastname: Beattie
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000235:genetics* / Q000473:pathology; D001921:Brain / Q000473:pathology; D006801:Humans; D015993:Life Tables; D012307:Risk Factors