title: Increased risk of Parkinson's disease in parents and siblings of patients.
abstract: We studied the incidence of Parkinson's disease in 586 first-degree relatives (parents and siblings) of 114 randomly ascertained white patients with idiopathic Parkinson's disease and in 522 first-degree relatives of 114 age-matched unrelated white control subjects. Sixteen percent of patients had a family history as compared to 4% of control subjects (p < 0.01). The age-specific cumulative incidence was higher in the first-degree relatives of patients than in the first-degree relatives of control subjects (p = 0.007). The age-adjusted odds ratio was 3.5 (95% confidence interval: 1.3-9.4; p = 0.014). These results suggest that genes contribute to the etiology of Parkinson's disease.
authors.affiliation: Department of Molecular and Medical Genetics, Oregon Health Sciences University, Portland 97201.
authors.forename: H
authors.initials: H
authors.lastname: Payami
authors.forename: K
authors.initials: K
authors.lastname: Larsen
authors.forename: S
authors.initials: S
authors.lastname: Bernard
authors.forename: J
authors.initials: J
authors.lastname: Nutt
mesh_terms: D000368:Aged; D005260:Female; D005796:Genes; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000453:epidemiology* / Q000235:genetics*; D044465:White People