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Genome-Wide Association Study of Major Recurrent Depression in the UK Population

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Cathryn M. Lewis, Mandy Y. Ng, Amy W. Butler, Sarah Cohen-Woods, Rudolf Uher, Katrina Pirlo, Michael E. Weale, Alexandra Schosser, Ursula M. Paredes, Margarita Rivera Sanchez, Nicholas Craddock, Mike J. Owen, Lisa Jones, Ian Jones, Ania Korszun, Katherine J. Aitchison, Jianxin Shi, John P. Quinn, Alasdair MacKenzie, Peter Vollenweider & 13 more Gerard Waeber, Simon Heath, Mark Lathrop, Pierandrea Muglia, Michael R. Barnes, John C. Whittaker, Federica Tozzi, Florian Holsboer, Martin Preisig, Anne E. Farmer, Gerome Breen, Ian W. Craig, Peter McGuffin

Original languageEnglish
Article numberN/A
Pages (from-to)949 - 957
Number of pages9
JournalThe American Journal of Psychiatry
Volume167
Issue number8
Early online date1 Jun 2010
DOIs
E-pub ahead of print1 Jun 2010
Published1 Aug 2010

King's Authors

Abstract

Objective: Studies of major depression in twins and families have shown moderate to high heritability, but extensive molecular studies have failed to identify susceptibility genes convincingly. To detect genetic variants contributing to major depression, the authors performed a genome-wide association study using 1,636 cases of depression ascertained in the U.K. and 1,594 comparison subjects screened negative for psychiatric disorders.

Method: Cases were collected from 1) a case-control study of recurrent depression (the Depression Case Control [DeCC] study; N=1346), 2) an affected sibling pair linkage study of recurrent depression (probands from the Depression Network [DeNT] study; N=332), and 3) a pharmacogenetic study (the Genome-Based Therapeutic Drugs for Depression [GENDEN study; N=88). Depression cases and comparison subjects were genotyped at Centre National de Genotypage on the Illumina Human610-Quad Bead Chip. After applying stringent quality control criteria for missing genotypes, departure from Hardy-Weinberg equilibrium, and low minor allele frequency, the authors tested for association to depression using logistic regression, correcting for population ancestry.

Results: Single nucleotide polymorphisms (SNPs) in BICC1 achieved suggestive evidence for association, which strengthened after imputation of ungeno-typed markers, and in analysis of female depression cases. A meta-analysis of U.K. data with previously published results from studies in Munich and Lausanne showed some evidence for association near neuroligin 1 (NLGN1) on chromosome 3, but did not support findings at BICC1.

Conclusion: This study identifies several signals for association worthy of further investigation but, as in previous genome-wide studies, suggests that individual gene contributions to depression are likely to have only minor effects, and very large pooled analyses will be required to identify them.

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