title: The genetic epidemiology of schizophrenia and the design of linkage studies.
abstract: There are three aspects of schizophrenia that are challenges to the design of linkage studies. First, analysis of twin and family data have consistently failed to identify a single major gene effect. Second, ascertainment of multiplex families does not guarantee the sampling of families in whom a major gene is segregating even if such a gene exists. Third, environmental influences appear to play an essential role in the etiology of at least some schizophrenia. The implications of these features for linkage strategies in schizophrenia are discussed.
authors.affiliation: Department of Psychology, University of Minnesota, Minneapolis.
authors.forename: M
authors.initials: M
authors.lastname: McGue
authors.forename: I I
authors.initials: II
authors.lastname: Gottesman
mesh_terms: D003430:Cross-Sectional Studies; D004200:Diseases in Twins / Q000235:genetics; D005787:Gene Frequency / Q000235:genetics; D008040:Genetic Linkage / Q000235:genetics*; D006801:Humans; D015994:Incidence; D008957:Models, Genetic; D012307:Risk Factors; D012559:Schizophrenia / Q000453:epidemiology / Q000235:genetics*; D012565:Schizophrenic Psychology; D012931:Social Environment