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Mol Psychiatry. 1998 Nov;3(6):521-7.

Evidence for a chromosome 2p13-14 schizophrenia susceptibility locus in families from Palau, Micronesia.

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  • 1Department of Psychiatry, University of Utah School of Medicine, Salt Lake City 84132, USA.


A large multiplex schizophrenia pedigree ascertained from the Micronesian nation of Palau was genotyped with 406 microsatellite DNA markers evenly distributed throughout the genome. Assuming autosomal dominant inheritance, the highest genome-wide lod scores were found for DNA loci mapping to 2p13-14; the maximum lod score was 2.17 (theta = 0.05) at D2S441. A nonparametric APM analysis was also suggestive at D2S441 (APM score = 2.96, P = 0.011). Of the 14 affected cases in this extended family, eight share a large haplotype in this region spanning approximately 11 cM. When 16 other families containing 65 schizophrenic cases were typed in a follow-up study of this region, the maximum lod score remained positive (maximum at D2S441 1.69, theta = 0.20). APM results also remained positive at D2S441 for all 17 families (APM score = 4.87, P = 0.0006). The linkage and haplotype sharing results provide suggestive evidence for a 2p locus predisposing to schizophrenia in a subset of families in the Palauan population.

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