The role of polygenic risk score gene-set analysis in the context of the omnigenic model of schizophrenia.

Academic Article

Abstract

  • A recent development in the genetic architecture of schizophrenia suggested that an omnigenic model may underlie the risk for this disorder. The aim of our study was to use polygenic profile scoring to quantitatively assess whether a number of experimentally derived sets would contribute to the disorder above and beyond the omnigenic effect. Using the PGC2 secondary analysis schizophrenia case-control cohort (Nā€‰=ā€‰29,125 cases and 34,836 controls), a robust polygenic signal was observed from gene sets based on TCF4, FMR1, upregulation from MIR137 and downregulation from CHD8. Additional analyses revealed a constant floor effect in the amount of variance explained, consistent with the omnigenic model. Thus, we report that putative core gene sets showed a significant effect above and beyond the floor effect that might be linked with the underlying omnigenic background. In addition, we demonstrate a method to quantify the contribution of specific gene sets within the omnigenic context.
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    Published In

    Keywords

  • Case-Control Studies, DNA-Binding Proteins, Fragile X Mental Retardation Protein, Genetic Predisposition to Disease, Genome-Wide Association Study, Humans, MicroRNAs, Models, Genetic, Multifactorial Inheritance, Polymorphism, Single Nucleotide, Risk Assessment, Schizophrenia, Transcription Factor 4, Transcription Factors
  • Digital Object Identifier (doi)

    Author List

  • Rammos A; Gonzalez LAN; Schizophrenia Working Group of the Psychiatric Genomics Consortium 2,; Weinberger DR; Mitchell KJ; Nicodemus KK
  • Start Page

  • 1562
  • End Page

  • 1569
  • Volume

  • 44
  • Issue

  • 9