Analysis of shared common genetic risk between amyotrophic lateral sclerosis and epilepsy

Neurobiol Aging. 2020 Aug;92:153.e1-153.e5. doi: 10.1016/j.neurobiolaging.2020.04.011. Epub 2020 Apr 18.

Abstract

Because hyper-excitability has been shown to be a shared pathophysiological mechanism, we used the latest and largest genome-wide studies in amyotrophic lateral sclerosis (n = 36,052) and epilepsy (n = 38,349) to determine genetic overlap between these conditions. First, we showed no significant genetic correlation, also when binned on minor allele frequency. Second, we confirmed the absence of polygenic overlap using genomic risk score analysis. Finally, we did not identify pleiotropic variants in meta-analyses of the 2 diseases. Our findings indicate that amyotrophic lateral sclerosis and epilepsy do not share common genetic risk, showing that hyper-excitability in both disorders has distinct origins.

Keywords: ALS; Epilepsy; Genetic correlation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amyotrophic Lateral Sclerosis / genetics*
  • Epilepsy / genetics*
  • Gene Frequency
  • Genetic Variation*
  • Genome-Wide Association Study*
  • Humans
  • Negative Results*
  • Risk