Cited by 157Traumatic Brain Injury ResearchDementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

Chronic traumatic encephalopathy is a common co-morbidity, but less frequent primary dementia in former soccer and rugby players

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Lee, Edward B., Kinch, Kevin, Johnson, Victoria E., Trojanowski, John Q., Smith, Douglas H., Stewart, William·2019·Acta Neuropathologica

Abstract

Chronic traumatic encephalopathy (CTE) is reported at high prevalence in selected autopsy case series of former contact sports athletes. Nevertheless, the contribution of CTE pathology to clinical presentation and its interaction with co-morbid neurodegenerative pathologies remain unclear. To address these issues, we performed comprehensive neuropathology assessments on the brains of former athletes with dementia and considered these findings together with detailed clinical histories to derive an integrated clinicopathological diagnosis for each case. Consecutive, autopsy-acquired brains from former soccer and rugby players with dementia were assessed for neurodegenerative pathologies using established and preliminary consensus protocols. Thereafter, next of kin interviews were conducted to obtain detailed accounts of the patient's clinical presentation and course of disease to inform a final, integrated clinicopathological diagnosis. Neuropathologic change consistent with CTE (CTE-NC) was confirmed in five of seven former soccer and three of four former rugby players' brains, invariably in combination with mixed, often multiple neurodegenerative pathologies. However, in just three cases was the integrated dementia diagnosis consistent with CTE, the remainder having alternate diagnoses, with the most frequent integrated diagnosis Alzheimer's disease (AD) (four cases; one as mixed AD and vascular dementia). This consecutive autopsy series identifies neuropathologic change consistent with preliminary diagnostic criteria for CTE (CTE-NC) in a high proportion of former soccer and rugby players dying with dementia. However, in the majority, CTE-NC appears as a co-morbidity rather than the primary, dementia causing pathology. As such, we suggest that while CTE-NC might be common in former athletes with dementia, in many cases its clinical significance remains uncertain.

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  • The authors of that study concluded that the clinical significance of CTE-pathology remains uncertain and that it is likely a co-morbidity rather than the cause of dementia in former athletes.

    “Furthermore, the authors concluded that the clinical significance of CTE-pathology remains uncertain, and that it is likely a co-morbidity rather than the cause of dementia in former athletes [83].”
  • In a recent study of former athletes, CTE-consistent pathology was found in 73% of cases, and all of these presented with multiple mixed neurodegenerative pathologies, most notably AD-consistent pathology.

    “Although CTE-consistent pathology was found in 73% of cases, all of these presented with multiple mixed neurodegenerative pathologies, most notably AD-consistent pathology.”

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Research works printed but not linked: 1

  1. [29]McKee AC Stein TD Nowinski CJ Stern RA Deneshvar DH Alvarez VE The spectrum of disease in chronic traumatic encephalopathy Brain 2012 136 43 64 10.1093/brain/aws307 23208308 PMC3624697 · DOI · Paper page

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Authors
Lee, E. B., Kinch, K., Johnson, V. E., Trojanowski, J. Q., Smith, D. H., & Stewart, W.
Affiliations
  • University of Pennsylvania (US)
  • Queen Elizabeth University Hospital (GB)
Venue
Acta Neuropathologica
Published
2019-06-01
Volume
138
Issue
3
Pages
389-399
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2947253577
Cited by
157
References
51
Citations by year
2026: 7 · 2025: 23 · 2024: 12 · 2023: 29 · 2022: 19 · 2021: 26 · 2020: 34 · 2019: 4 · 2018: 1
FWCI
15.80
Type
journal article
Language
en
Open access
Locations
  • Acta Neuropathologica (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion, cc-by-sa)
Funders
  • National Institute of Neurological Disorders and Stroke (R01NS092398, R01NS094003, R01NS038104)
  • The Football Association
Topics
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
chronic traumatic encephalopathy, dementia, comorbidities, Alzheimer's disease, clinicopathological diagnosis, contact sports, neuropathology
MeSH terms
Chronic Traumatic Encephalopathy, Aged, Athletic Injuries, Dementia, Football, Humans, Male, Middle Aged, Soccer, Comorbidity

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