Format

Send to

Choose Destination
Am J Hum Genet. 2013 Sep 5;93(3):463-70. doi: 10.1016/j.ajhg.2013.07.007. Epub 2013 Aug 15.

Additive genetic variation in schizophrenia risk is shared by populations of African and European descent.

Author information

1
Department of Psychology and Neuroscience, University of Colorado, Boulder, CO 80302, USA. teresa.decandia@colorado.edu

Abstract

To investigate the extent to which the proportion of schizophrenia's additive genetic variation tagged by SNPs is shared by populations of European and African descent, we analyzed the largest combined African descent (AD [n = 2,142]) and European descent (ED [n = 4,990]) schizophrenia case-control genome-wide association study (GWAS) data set available, the Molecular Genetics of Schizophrenia (MGS) data set. We show how a method that uses genomic similarities at measured SNPs to estimate the additive genetic correlation (SNP correlation [SNP-rg]) between traits can be extended to estimate SNP-rg for the same trait between ethnicities. We estimated SNP-rg for schizophrenia between the MGS ED and MGS AD samples to be 0.66 (SE = 0.23), which is significantly different from 0 (p(SNP-rg = 0) = 0.0003), but not 1 (p(SNP-rg = 1) = 0.26). We re-estimated SNP-rg between an independent ED data set (n = 6,665) and the MGS AD sample to be 0.61 (SE = 0.21, p(SNP-rg = 0) = 0.0003, p(SNP-rg = 1) = 0.16). These results suggest that many schizophrenia risk alleles are shared across ethnic groups and predate African-European divergence.

PMID:
23954163
PMCID:
PMC3845872
DOI:
10.1016/j.ajhg.2013.07.007
[Indexed for MEDLINE]
Free PMC Article

Publication types, MeSH terms, Grant support

Publication types

MeSH terms

Grant support

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center