Analysis of hnRNPA1, A2/B1, and A3 genes in patients with amyotrophic lateral sclerosis

Daniela Calini, Lucia Corrado, Roberto Del Bo, Stella Gagliardi, Viviana Pensato, Federico Verde, Stefania Corti, Letizia Mazzini, Pamela Milani, Barbara Castellotti, Cinzia Bertolin, Gianni Sorarù, Cristina Cereda, Giacomo P. Comi, Sandra D'Alfonso, Cinzia Gellera, Nicola Ticozzi, John E. Landers, Antonia Ratti, Vincenzo Silani

Research output: Contribution to journalArticle

Abstract

Mutations in the prion-like domain (PrLD) of hnRNPA1 and A2/B1 genes were recently identified in 2 families with inclusion body myopathy associated with Paget disease of bone, frontotemporal dementia (FTD), and amyotrophic lateral sclerosis, and in ALS patients. These mutations were shown to increase the propensity of hnRNPA1 and A2/B1 proteins, which are TDP-43-binding partners, to self-aggregate. hnRNPA3 protein contains a similar PrLD and was recently described in the p62-positive/TDP-43-negative inclusions in affected tissues of C9orf72-mutated ALS/FTD patients. We screened hnRNPA1, A2/B1, and A3 genes in a cohort of 113 familial ALS (FALS) individuals without mutations in other known ALS-causative genes. We extended our analysis to 108 FALS with mutations in other ALS-associated genes and to 622 sporadic cases by screening specifically the PrLDs of hnRNPA1, A2/B1, and A3. We failed to find variants in each cohort. Our results suggest that mutations in hnRNPA1, A2/B1, and A3 genes are a rare finding in ALS.

Original languageEnglish
JournalNeurobiology of Aging
Volume34
Issue number11
DOIs
Publication statusPublished - Nov 2013

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Keywords

  • ALS
  • Genetics
  • HnRNP
  • IBMPFD
  • Prion-like domain

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)
  • Ageing
  • Developmental Biology
  • Geriatrics and Gerontology

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