NTM and NR3C2 polymorphisms influencing intelligence: Family-based association studies

Yue Pan, Ke Sheng Wang, Nagesh Aragam

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Family, twin, and adoption studies have indicated that human intelligence quotient (IQ) has significant genetic components. We performed a low-density genome-wide association analysis with a family-based association test to identify genetic variants influencing IQ, as measured by Wechsler Adult Intelligence Scale full-score IQ (FSIQ). We examined 11,120 single-nucleotide polymorphisms (SNPs) from the Affymetrix GeneChips 10K mapping array genotyped in 292 nuclear families from Genetic Analysis Workshop 14, a subset from the Collaborative Study on the Genetics of Alcoholism (COGA). A replication analysis was performed using part of International Multi-Center ADHD Genetics Project (IMAGE) dataset. Twenty-two SNPs were identified as having suggestive associations with IQ (p<10-3) in the COGA sample and eleven of the SNPs were located within known genes. In particular, NTM at 11q25 (rs411280, p=0.000764) and NR3C2 at 4q31.1 (rs3846329, p=0.000675) were two novel genes which have not been associated with IQ in other studies. It has been reported that NTM might play a role in late-onset Alzheimer disease while NR3C2 may be associated with cognitive function and major depression. The associations of these two genes were well-replicated by single-marker and haplotype analyses in the IMAGE sample. In conclusion, our findings provide evidence that chromosome regions of 11q25 and 4q31.1 contain genes affecting IQ. This study will serve as a resource for replication in other populations.

Original languageEnglish (US)
Pages (from-to)154-160
Number of pages7
JournalProgress in Neuro-Psychopharmacology and Biological Psychiatry
Volume35
Issue number1
DOIs
StatePublished - Jan 15 2011
Externally publishedYes

Keywords

  • Family-based association test
  • Genome-wide association
  • IQ
  • NR3C2
  • NTM
  • Single-nucleotide polymorphisms

ASJC Scopus subject areas

  • Pharmacology
  • Biological Psychiatry

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