Cited by 650Amyotrophic Lateral Sclerosis ResearchHereditary Neurological DisordersGenetic Neurodegenerative Diseases

<emph type="ital">SQSTM1</emph> Mutations in Familial and Sporadic Amyotrophic Lateral Sclerosis

Fecto, Faisal·2011·Archives of Neurology

Abstract

BACKGROUND: The SQSTM1 gene encodes p62, a major pathologic protein involved in neurodegeneration. OBJECTIVE: To examine whether SQSTM1 mutations contribute to familial and sporadic amyotrophic lateral sclerosis (ALS). DESIGN: Case-control study. SETTING: Academic research. Patients A cohort of 546 patients with familial (n = 340) or sporadic (n = 206) ALS seen at a major academic referral center were screened for SQSTM1 mutations. MAIN OUTCOME MEASURES: We evaluated the distribution of missense, deletion, silent, and intronic variants in SQSTM1 among our cohort of patients with ALS. In silico analysis of variants was performed to predict alterations in p62 structure and function. RESULTS: We identified 10 novel SQSTM1 mutations (9 heterozygous missense and 1 deletion) in 15 patients (6 with familial ALS and 9 with sporadic ALS). Predictive in silico analysis classified 8 of 9 missense variants as pathogenic. CONCLUSIONS: Using candidate gene identification based on prior biological knowledge and the functional prediction of rare variants, we identified several novel SQSTM1 mutations in patients with ALS. Our findings provide evidence of a direct genetic role for p62 in ALS pathogenesis and suggest that regulation of protein degradation pathways may represent an important therapeutic target in motor neuron degeneration.

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Crossref · 10.1001/archneurol.2011.250

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  • 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 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].”

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Authors
Fecto, F.
Affiliations
Northwestern University (US)
Corresponding author
Fecto, Faisal
Venue
Archives of Neurology
Published
2011-11-01
Volume
68
Issue
11
Pages
1440
ISSN
0003-9942 (ISSN-L)
OpenAlex
W2145697686
Cited by
650
References
40
Citations by year
2026: 22 · 2025: 34 · 2024: 25 · 2023: 36 · 2022: 45 · 2021: 38 · 2020: 79 · 2019: 51 · 2018: 48 · 2017: 53 · 2016: 67 · 2015: 57 · 2014: 35 · 2013: 35 · 2012: 20
FWCI
18.86
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (T32 AG-20506, T32AG020506)
  • National Institute of Neurological Disorders and Stroke (NS050641, R01NS050641)
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, genetic mutations, missense mutations, protein degradation pathways, motor neuron degeneration, ALS pathogenesis, novel mutations
MeSH terms
Sequestosome-1 Protein, Adult, Aged, Amyotrophic Lateral Sclerosis, Female, Humans, Male, Middle Aged, Mutation, Genetic Variation, Cohort Studies, Case-Control Studies, Adaptor Proteins, Signal Transducing

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