Cited by 183Amyotrophic Lateral Sclerosis ResearchAlzheimer's disease research and treatmentsGenetic Neurodegenerative Diseases

Pathological heterogeneity in amyotrophic lateral sclerosis with FUS mutations: two distinct patterns correlating with disease severity and mutation

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Mackenzie, Ian R. A., Ansorge, Olaf, Strong, Michael, Bilbao, Juan, Zinman, Lorne, Ang, Lee-Cyn, Baker, Matt, Stewart, Heather +3 more·2011·Acta Neuropathologica

Abstract

Mutations in the gene encoding the fused in sarcoma (FUS) protein are responsible for ~3% of familial amyotrophic lateral sclerosis (ALS) and <1% of sporadic ALS (ALS-FUS). Descriptions of the associated neuropathology are few and largely restricted to individual case reports. To better define the neuropathology associated with FUS mutations, we have undertaken a detailed comparative analysis of six cases of ALS-FUS that include sporadic and familial cases, with both juvenile and adult onset, and with four different FUS mutations. We found significant pathological heterogeneity among our cases, with two distinct patterns that correlated with the disease severity and the specific mutation. Frequent basophilic inclusions and round FUS-immunoreactive (FUS-ir) neuronal cytoplasmic inclusions (NCI) were a consistent feature of our early-onset cases, including two with the p.P525L mutation. In contrast, our late-onset cases that included two with the p.R521C mutation had tangle-like NCI and numerous FUS-ir glial cytoplasmic inclusions. Double-labeling experiments demonstrated that many of the glial inclusions were in oligodendrocytes. Comparison with the neuropathology of cases of frontotemporal lobar degeneration with FUS-ir pathology showed significant differences and suggests that FUS mutations are associated with a distinct pathobiology.

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Authors
Mackenzie, I. R. A., Ansorge, O., Strong, M., Bilbao, J., Zinman, L., Ang, L.-C., Baker, M., Stewart, H., Eisen, A., Rademakers, R., & Neumann, M.
Affiliations
  • University of British Columbia (CA)
  • John Radcliffe Hospital (GB)
  • London Health Sciences Centre (CA)
  • Sunnybrook Health Science Centre (CA)
  • University of Toronto (CA)
  • Mayo Clinic (US)
  • University Hospital Zurich (CH)
Corresponding author
Mackenzie, Ian R. A.
Venue
Acta Neuropathologica
Published
2011-05-21
Volume
122
Issue
1
Pages
87-98
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2004415828
Cited by
183
References
44
Citations by year
2026: 5 · 2025: 7 · 2024: 15 · 2023: 6 · 2022: 7 · 2021: 13 · 2020: 23 · 2019: 6 · 2018: 15 · 2017: 13 · 2016: 8 · 2015: 13 · 2014: 13 · 2013: 16 · 2012: 14
FWCI
10.25
Type
journal article
Language
en
Open access
Locations
  • Acta Neuropathologica (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • cIRcle (University of British Columbia) (submittedVersion, cc-by-nc-nd)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
Funders
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (132864)
  • Canadian Institutes of Health Research (74580)
  • National Institute on Aging (R01AG026251)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
Keywords
amyotrophic lateral sclerosis, FUS mutations, neuropathology, pathological heterogeneity, neuronal cytoplasmic inclusions, glial cytoplasmic inclusions, oligodendrocytes, frontotemporal lobar degeneration, disease severity, juvenile onset, sporadic ALS, familial ALS
MeSH terms
Adolescent, Adult, Amyotrophic Lateral Sclerosis, Inclusion Bodies, Female, Humans, Male, Medulla Oblongata, Middle Aged, Motor Cortex, Motor Neurons, Mutation, Neuroglia, Severity of Illness Index, Spinal Cord, RNA-Binding Protein FUS, Young Adult

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