We completed a systematic genome-wide search for evidence of loci linked to schizophrenia using a collection of 70 pedigrees containing multiple affected individuals according to three phenotype classifications: schizophrenia only (48 pedigrees; 70 sibpairs); schizophrenia plus schizoaffective disor
Genome-wide search for genes affecting the risk for alcohol dependence
โ Scribed by Reich, Theodore; Edenberg, Howard J.; Goate, Alison; Williams, Jeff T.; Rice, John P.; Van Eerdewegh, Paul; Foroud, Tatiana; Hesselbrock, Victor; Schuckit, Marc A.; Bucholz, Kathleen; Porjesz, Bernice; Li, Ting-Kai; Conneally, P. Michael; Nurnberger, John I.; Tischfield, Jay A.; Crowe, Raymond R.; Cloninger, C. Robert; Wu, William; Shears, Shantia; Carr, Kristie; Crose, Candice; Willig, Chris; Begleiter, Henri
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 46 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0148-7299
- DOI
- 10.1002/(sici)1096-8628(19980508)81:3<207::aid-ajmg1>3.0.co;2-t
No coin nor oath required. For personal study only.
โฆ Synopsis
Alcohol dependence is a leading cause of morbidity and premature death. Several lines of evidence suggest a substantial genetic component to the risk for alcoholism: sibs of alcoholic probands have a 3-8 fold increased risk of also developing alcoholism, and twin heritability estimates of 50-60% are reported by contemporary studies of twins. We report on the results of a six-center collaborative study to identify susceptibility loci for alcohol dependence. A genome-wide screen examined 291 markers in 987 individuals from 105 families. Two-point and multipoint nonparametric linkage analyses were performed to detect susceptibility loci for alcohol dependence. Multipoint methods provided the strongest suggestions of linkage with susceptibility loci for alcohol dependence on chromosomes 1 and 7, and more modest evidence for a locus on chromosome 2. In addition, there was suggestive evidence for a protective locus on chromosome 4 near the alcohol dehydrogenase genes, for which protective effects have been reported in Asian populations.
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