An Interleukin-1 beta (IL1B) haplotype linked with psychosis transition is associated with IL1B gene expression and brain structure

Schizophr Res. 2019 Feb:204:201-205. doi: 10.1016/j.schres.2018.09.008. Epub 2018 Sep 14.

Abstract

We investigated IL1B genetic variation previously associated with risk for transition to psychosis for its association with gene expression in human post-mortem dorsolateral prefrontal cortex (DLPFC) from 74 (37 schizophrenia, 37 control) individuals and brain structure in 92 (44 schizophrenia, 48 control) living individuals. The IL1B A-G-T 'risk for psychosis transition' haplotype (rs16944|rs4848306|rs12621220) was associated with upregulation of IL1B mRNA expression in the DLPFC as well as reduced total grey matter and left middle frontal volumes and enlarged left lateral ventricular volume. Our results suggest IL1B genetic variation may confer psychosis risk via elevated mRNA expression and/or brain structure abnormalities.

Keywords: Dorsolateral prefrontal cortex; Gene expression; Grey matter; Interleukin 1-beta; Lateral ventricle; Schizophrenia.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Female
  • Gene Expression / genetics
  • Gray Matter / pathology*
  • Haplotypes
  • Humans
  • Interleukin-1beta / genetics*
  • Interleukin-1beta / metabolism
  • Lateral Ventricles / pathology*
  • Male
  • Middle Aged
  • Prefrontal Cortex / metabolism*
  • Prefrontal Cortex / pathology*
  • Schizophrenia* / genetics
  • Schizophrenia* / metabolism
  • Schizophrenia* / pathology
  • Up-Regulation

Substances

  • IL1B protein, human
  • Interleukin-1beta