Transcriptome-wide association study reveals two genes that influence mismatch negativity

Cell Rep. 2021 Mar 16;34(11):108868. doi: 10.1016/j.celrep.2021.108868.

Abstract

Mismatch negativity (MMN) is a differential electrophysiological response measuring cortical adaptability to unpredictable stimuli. MMN is consistently attenuated in patients with psychosis. However, the genetics of MMN are uncharted, limiting the validation of MMN as a psychosis endophenotype. Here, we perform a transcriptome-wide association study of 728 individuals, which reveals 2 genes (FAM89A and ENGASE) whose expression in cortical tissues is associated with MMN. Enrichment analyses of neurodevelopmental expression signatures show that genes associated with MMN tend to be overexpressed in the frontal cortex during prenatal development but are significantly downregulated in adulthood. Endophenotype ranking value calculations comparing MMN and three other candidate psychosis endophenotypes (lateral ventricular volume and two auditory-verbal learning measures) find MMN to be considerably superior. These results yield promising insights into sensory processing in the cortex and endorse the notion of MMN as a psychosis endophenotype.

Keywords: Bayesian brain; MMN; endophenotype; gene expression; mismatch negativity; neurodevelopment; prediction error; psychosis; schizophrenia; transcriptome-wide association study.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Cerebral Ventricles / pathology
  • Child
  • Electrophysiological Phenomena / genetics
  • Female
  • Genome-Wide Association Study*
  • Humans
  • Intracellular Signaling Peptides and Proteins / genetics*
  • Intracellular Signaling Peptides and Proteins / metabolism
  • Intrinsically Disordered Proteins / genetics*
  • Intrinsically Disordered Proteins / metabolism
  • Male
  • Mannosyl-Glycoprotein Endo-beta-N-Acetylglucosaminidase / genetics*
  • Mannosyl-Glycoprotein Endo-beta-N-Acetylglucosaminidase / metabolism
  • Memory, Short-Term
  • Middle Aged
  • Neurotransmitter Agents / metabolism
  • Phenotype
  • Receptors, Virus / genetics*
  • Receptors, Virus / metabolism
  • Schizophrenia / physiopathology
  • Transcriptome / genetics*
  • Young Adult

Substances

  • FAM89A protein, human
  • Intracellular Signaling Peptides and Proteins
  • Intrinsically Disordered Proteins
  • Neurotransmitter Agents
  • Receptors, Virus
  • Mannosyl-Glycoprotein Endo-beta-N-Acetylglucosaminidase