Multi-Trait Analysis of GWAS and Biological Insights Into Cognition: A Response to Hill (2018)

Twin Res Hum Genet. 2018 Oct;21(5):394-397. doi: 10.1017/thg.2018.46. Epub 2018 Jul 13.

Abstract

Hill (Twin Research and Human Genetics, Vol. 21, 2018, 84-88) presented a critique of our recently published paper in Cell Reports entitled 'Large-Scale Cognitive GWAS Meta-Analysis Reveals Tissue-Specific Neural Expression and Potential Nootropic Drug Targets' (Lam et al., Cell Reports, Vol. 21, 2017, 2597-2613). Specifically, Hill offered several interrelated comments suggesting potential problems with our use of a new analytic method called Multi-Trait Analysis of GWAS (MTAG) (Turley et al., Nature Genetics, Vol. 50, 2018, 229-237). In this brief article, we respond to each of these concerns. Using empirical data, we conclude that our MTAG results do not suffer from 'inflation in the FDR [false discovery rate]', as suggested by Hill (Twin Research and Human Genetics, Vol. 21, 2018, 84-88), and are not 'more relevant to the genetic contributions to education than they are to the genetic contributions to intelligence'.

Keywords: GWAS; calcium channel; cerebellum; gene expression; general cognitive ability; neurodevelopment; nootropics; potassium channel; synapse.

Publication types

  • Comment

MeSH terms

  • Cognition
  • Genetic Predisposition to Disease
  • Genome-Wide Association Study*
  • Humans
  • Nootropic Agents*
  • Polymorphism, Single Nucleotide

Substances

  • Nootropic Agents