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A 3p26-3p25 genetic linkage finding for DSM-IV major depression in heavy smoking families
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May 15 2011
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Source: Am J Psychiatry. 168(8):848-852.
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Alternative Title:Am J Psychiatry
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Description:Objective
The authors tested for genetic linkage of DSM-IV-diagnosed major depressive disorder in families that were ascertained for cigarette smoking.
Method
Within a study that targeted families characterized by a history of smoking, analyses derived a subset of 91 Australian families with two or more offspring with a history of DSM-IV major depressive disorder (affected sibling pairs, N=187) and 25 Finnish families (affected sibling pairs, N=33). Within this affected sibling pair design, the authors conducted nonparametric linkage analysis.
Results
In the Australian heavy smoking families, the authors found a genome-wide significant multipoint LOD score of 4.14 for major depressive disorder on chromosome 3 at 24.9 cM (3p26-3p25).
Conclusions
Genome-wide significant linkage was detected for major depressive disorder on chromosome 3p in a sample ascertained for smoking. A linkage peak at this location was also observed in an independent study of major depressive disorder.
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Pubmed ID:21572167
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Pubmed Central ID:PMC3433250
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