title: Apolipoprotein E genotype in schizophrenia: frequency, age of onset, and neuropathologic features.
abstract: Apolipoprotein E (ApoE) genotype has been found to affect the expression of a variety of neuropsychiatric disorders. We determined ApoE genotype frequencies and their relationship to clinical and pathological features in a diverse cohort of individuals with schizophrenia. There were no differences in ApoE genotype frequencies between schizophrenics and controls. However, the ApoE epsilon 4 genotype was associated with a younger age of onset of schizophrenia, and in an elderly subsample, individuals with the epsilon 4 allele more frequently exhibited co-existent dementia and had more neurofibrillary pathology (although none of the cases met criteria for Alzheimer's disease). This examination of ApoE in relation to clinical and neurobiological features of schizophrenia suggests that it modifies the phenotypic expression of the disease.
authors.affiliation: Department of Psychiatry, University of Pennsylvania School of Medicine, Philadelphia 19104, USA.
authors.forename: S E
authors.initials: SE
authors.lastname: Arnold
authors.forename: E
authors.initials: E
authors.lastname: Joo
authors.forename: M G
authors.initials: MG
authors.lastname: Martinoli
authors.forename: N
authors.initials: N
authors.lastname: Roy
authors.forename: J Q
authors.initials: JQ
authors.lastname: Trojanowski
authors.forename: R E
authors.initials: RE
authors.lastname: Gur
authors.forename: T
authors.initials: T
authors.lastname: Cannon
authors.forename: R A
authors.initials: RA
authors.lastname: Price
mesh_terms: D000328:Adult; D017668:Age of Onset; D001057:Apolipoproteins E / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D012559:Schizophrenia / Q000235:genetics* / Q000473:pathology
chemical_list: D001057:Apolipoproteins E