Association of common genetic variants in GPCPD1 with scaling of visual cortical surface area in humans

Alzheimer's Disease Neuroimaging Initiative, Pediatric Imaging, Neurocognition, and Genetics Study

Research output: Contribution to journalArticlepeer-review

Abstract

Visual cortical surface area varies two- to threefold between human individuals, is highly heritable, and has been correlated with visual acuity and visual perception. However, it is still largely unknown what specific genetic and environmental factors contribute to normal variation in the area of visual cortex. To identify SNPs associated with the proportional surface area of visual cortex, we performed a genome-wide association study followed by replication in two independent cohorts.Weidentified one SNP (rs6116869) that replicated in both cohorts and had genome-wide significant association (Pcombined = 3.2 × 10-8). Furthermore, a metaanalysis of imputed SNPs in this genomic region identified a more significantly associated SNP (rs238295; P = 6.5 × 10-9) that was in strong linkage disequilibrium with rs6116869. These SNPs are located within 4 kb of the 5′ UTR of GPCPD1, glycerophosphocholine phosphodiesterase GDE1 homolog (Saccharomyces cerevisiae), which in humans, is more highly expressed in occipital cortex compared with the remainder of cortex than 99.9% of genes genome-wide. Based on these findings, we conclude that this common genetic variation contributes to the proportional area of human visual cortex. We suggest that identifying genes that contribute to normal cortical architecture provides a first step to understanding genetic mechanisms that underlie visual perception.

Original languageEnglish (US)
Pages (from-to)3985-3990
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume109
Issue number10
DOIs
StatePublished - Mar 6 2012
Externally publishedYes

Keywords

  • Allometry
  • Brain morphometry
  • Imaging genetics
  • V1

ASJC Scopus subject areas

  • General

Fingerprint

Dive into the research topics of 'Association of common genetic variants in GPCPD1 with scaling of visual cortical surface area in humans'. Together they form a unique fingerprint.

Cite this