Genome-wide Meta-analysis Finds the ACSL5-ZDHHC6 Locus Is Associated with ALS and Links Weight Loss to the Disease Genetics

Cell Rep. 2020 Oct 27;33(4):108323. doi: 10.1016/j.celrep.2020.108323.

Abstract

We meta-analyze amyotrophic lateral sclerosis (ALS) genome-wide association study (GWAS) data of European and Chinese populations (84,694 individuals). We find an additional significant association between rs58854276 spanning ACSL5-ZDHHC6 with ALS (p = 8.3 × 10-9), with replication in an independent Australian cohort (1,502 individuals; p = 0.037). Moreover, B4GALNT1, G2E3-SCFD1, and TRIP11-ATXN3 are identified using a gene-based analysis. ACSL5 has been associated with rapid weight loss, as has another ALS-associated gene, GPX3. Weight loss is frequent in ALS patients and is associated with shorter survival. We investigate the effect of the ACSL5 and GPX3 single-nucleotide polymorphisms (SNPs), using longitudinal body composition and weight data of 77 patients and 77 controls. In patients' fat-free mass, although not significant, we observe an effect in the expected direction (rs58854276: -2.1 ± 1.3 kg/A allele, p = 0.053; rs3828599: -1.0 ± 1.3 kg/A allele, p = 0.22). No effect was observed in controls. Our findings support the increasing interest in lipid metabolism in ALS and link the disease genetics to weight loss in patients.

Keywords: amyotrophic lateral sclerosis; cross-ethnic meta-analysis; eQTLs; fat-free mass; genetics; genome-wide association study; genomics; longitudinal study; motor neuron disease; weight loss.

Publication types

  • Meta-Analysis
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acyltransferases / adverse effects*
  • Amyotrophic Lateral Sclerosis / complications*
  • Amyotrophic Lateral Sclerosis / genetics
  • Genetic Predisposition to Disease
  • Genome-Wide Association Study / methods*
  • Humans
  • Polymorphism, Single Nucleotide / genetics*
  • Weight Loss / genetics*

Substances

  • ZDHHC6 protein, human
  • Acyltransferases