Cited by 241Amyotrophic Lateral Sclerosis ResearchHereditary Neurological DisordersGenetic Neurodegenerative Diseases

Mutations in SQSTM1 encoding p62 in amyotrophic lateral sclerosis: genetics and neuropathology

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Teyssou, Elisa, Takeda, Takahiro, Lebon, Vincent, Boillée, Séverine, Doukouré, Brahima, Bataillon, Guillaume, Sazdovitch, Véronique, Cazeneuve, Cécile +5 more·2013·Acta Neuropathologica

Abstract

Mutations in SQSTM1 encoding the sequestosome 1/p62 protein have recently been identified in familial and sporadic cases of amyotrophic lateral sclerosis (ALS). p62 is a component of the ubiquitin inclusions detected in degenerating neurons in ALS patients. We sequenced SQSTM1 in 90 French patients with familial ALS (FALS) and 74 autopsied ALS cases with sporadic ALS (SALS). We identified, at the heterozygote state, one missense c.1175C>T, p.Pro392Leu (exon 8) in one of our FALS and one substitution in intron 7 (the c.1165+1G>A, previously called IVS7+1 G-A, A390X) affecting the exon 7 splicing site in one SALS. These mutations that are located in the ubiquitin-associated domain (UBA domain) of the p62 protein have already been described in Paget's disease and ALS patients carrying these mutations had both concomitant Paget's disease. However, we also identified two novel missense mutations in two SALS: the c.259A>G, p.Met87Val in exon 2 and the c.304A>G, p.Lys102Glu in exon 3. These mutations that were not detected in 360 control subjects are possibly pathogenic. Neuropathology analysis of three patients carrying SQSTM1 variants revealed the presence of large round p62 inclusions in motor neurons, and immunoblot analysis showed an increased p62 and TDP-43 protein levels in the spinal cord. Our results confirm that SQSTM1 gene mutations could be the cause or genetic susceptibility factor of ALS in some patients.

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Crossref · 10.1007/s00401-013-1090-0

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  • SQSTM1 mutations are a rare cause of ALS-FTD, accounting for ~1-3.5% of cases with or without family history, and also cause Paget's disease of bone and inclusion body myositis.

    “SQSTM1 mutations are not only a rare cause of ALS-FTD, accounting for ~1-3.5% of cases with or without family history [123–125], but also Paget’s disease of bone (PDB), a chronic and progressive skeletal disorder characterized by disorganized bone turnover [126,127], and inclusion body myositis (IBM) [128].”
  • ALS-FTD-associated SQSTM1 mutations frequently affect the UBA and LIR domains involved in autophagy and include both missense and nonsense mutations.

    “ALS-FTD-associated SQSTM1 mutations frequently affect the UBA and LIR domains involved in autophagy and include both missense and nonsense mutations [123–125].”
  • SQSTM1 mutations affect muscle, bone, and liver.

    “SQSTM1 mutations affect muscle, bone, and liver [125,367,368]”

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Authors
Teyssou, E., Takeda, T., Lebon, V., Boillée, S., Doukouré, B., Bataillon, G., Sazdovitch, V., Cazeneuve, C., Meininger, V., LeGuern, E., Salachas, F., Seilhean, D., & Millecamps, S.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Assistance Publique – Hôpitaux de Paris (FR)
  • Pitié-Salpêtrière Hospital (FR)
Corresponding author
Millecamps, Stéphanie
Venue
Acta Neuropathologica
Published
2013-02-17
Volume
125
Issue
4
Pages
511-522
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2151616372
Cited by
241
References
47
Citations by year
2026: 9 · 2025: 14 · 2024: 8 · 2023: 18 · 2022: 16 · 2021: 18 · 2020: 30 · 2019: 16 · 2018: 22 · 2017: 19 · 2016: 22 · 2015: 21 · 2014: 15 · 2013: 13
FWCI
15.02
Type
journal article
Language
en
Open access
Locations
  • Acta Neuropathologica (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
Keywords
p62, amyotrophic lateral sclerosis, familial ALS, sporadic ALS, missense mutations, UBA domain, TDP-43, motor neurons, neuropathology, genetic susceptibility, Paget's disease
MeSH terms
Sequestosome-1 Protein, Adult, Aged, Aged, 80 and over, Amyotrophic Lateral Sclerosis, Brain, DNA-Binding Proteins, Female, Heterozygote, Humans, Male, Middle Aged, Mutation, Ubiquitin, Adaptor Proteins, Signal Transducing

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