Cited by 222Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsCancer-related cognitive impairment studies

Predicting Alzheimer disease with β‐amyloid imaging: Results from the Australian imaging, biomarkers, and lifestyle study of ageing

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Rowe, Christopher C., Bourgeat, Pierrick, Ellis, Kathryn A., Brown, Belinda, Lim, Yen Ying, Mulligan, Rachel, Jones, Gareth, Maruff, Paul +18 more·2013·Annals of Neurology

Abstract

Objective: Biomarkers for Alzheimer disease (AD) can detect the disease pathology in asymptomatic subjects and individuals with mild cognitive impairment (MCI), but their cognitive prognosis remains uncertain. We aimed to determine the prognostic value of β‐amyloid imaging, alone and in combination with memory performance, hippocampal atrophy, and apolipoprotein E ε4 status in nondemented, older individuals. Methods: A total of 183 healthy individuals (age = 72.0 ± 7.26 years) and 87 participants with MCI (age = 73.7 ± 8.27) in the Australian Imaging, Biomarkers, and Lifestyle study of ageing were studied. Clinical reclassification was performed after 3 years, blind to biomarker findings. β‐Amyloid imaging was considered positive if the 11 C‐Pittsburgh compound B cortical to reference ratio was ≥1.5. Results: Thirteen percent of healthy persons progressed (15 to MCI, 8 to dementia), and 59% of the MCI cohort progressed to probable AD. Multivariate analysis showed β‐amyloid imaging as the single variable most strongly associated with progression. Of combinations, subtle memory impairment ( Z score = −0.5 to −1.5) with a positive amyloid scan was most strongly associated with progression in healthy individuals (odds ratio [OR] = 16, 95% confidence interval [CI] = 3.7–68; positive predictive value [PPV] = 50%, 95% CI = 19–81; negative predictive value [NPV] = 94%, 95% CI = 88–98). Almost all amnestic MCI subjects ( Z score ≤ −1.5) with a positive amyloid scan developed AD (OR = ∞; PPV = 86%, 95% CI = 72–95; NPV = 100%, 95% CI = 80–100). Hippocampal atrophy and ε4 status did not add further predictive value. Interpretation: Subtle memory impairment with a positive β‐amyloid scan identifies healthy individuals at high risk for MCI or AD. Clearly amnestic patients with a positive amyloid scan have prodromal AD and a poor prognosis for dementia within 3 years. Ann Neurol 2013;74:905–913

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Crossref · 10.1002/ana.24040

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  • Cognitively unimpaired individuals with abnormal amyloid biomarkers have more rapid progression of atrophy, hypometabolism, and clinical/cognitive decline than individuals without biomarker evidence of Aβ deposition.

    “Numerous studies have shown that CU individuals with abnormal amyloid biomarkers have more rapid progression of atrophy, hypometabolism, and clinical/cognitive decline than individuals without biomarker evidence of Aβ deposition [13,33,80,93–99]”
  • Older 11C-Pittsburgh compound B imaging studies suggested that only 13% of cognitively normal individuals positive for amyloid-β will transition to mild cognitive impairment or Alzheimer's disease.

    “Older studies of 11C-Pittsburgh compound B imaging suggested that only 13% of cognitively normal individuals that are positive for Aβ will transition to mild cognitive impairment (MCI) or AD (Rowe et al., 2013), whereas recent positron emission tomography (PET) imaging of tau indicates a stronger correlation of tau changes with cognitive impairment and transition to MCI (Hanseeuw et al., 2019).”

    From Dendritic Spine Remodeling and Synaptic Tau Levels in PS19 Tauopathy Mice (2021) · cites this paper as Rowe et al., 2013

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Authors
Rowe, C. C., Bourgeat, P., Ellis, K. A., Brown, B., Lim, Y. Y., Mulligan, R., Jones, G., Maruff, P., Woodward, M., Price, R., Robins, P., Tochon‐Danguy, H., O'Keefe, G., Pike, K. E., Yates, P., Szoeke, C., Salvado, O., Macaulay, S. L., O'Meara, T., Head, R., Cobiac, L., Savage, G., Martins, R., Masters, C. L., Ames, D., & Villemagne, V. L.
Affiliations
  • Austin Health (AU)
  • Australian e-Health Research Centre (AU)
  • The University of Melbourne (AU)
  • Edith Cowan University (AU)
  • Sir Charles Gairdner Hospital (AU)
  • La Trobe University (AU)
  • National Ageing Research Institute (AU)
  • Commonwealth Scientific and Industrial Research Organisation (AU)
  • Australian Research Council (AU)
Corresponding author
Rowe, Christopher C.
Venue
Annals of Neurology
Publisher
Wiley
Published
2013-12
Volume
74
Issue
6
Pages
905-913
ISSN
  • 0364-5134 (ISSN-L)
  • 1531-8249
OpenAlex
W2003569140
Cited by
222
References
39
Citations by year
2026: 5 · 2025: 7 · 2024: 9 · 2023: 15 · 2022: 19 · 2021: 22 · 2020: 18 · 2019: 24 · 2018: 34 · 2017: 13 · 2016: 19 · 2015: 19 · 2014: 17 · 2013: 1
FWCI
13.27
Type
journal article
Language
en
Open access
Locations
  • Annals of Neurology (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Research Bank (Australian Catholic University) (submittedVersion)
  • Murdoch University Research Portal (submittedVersion)
  • Australasian Journal of Paramedicine (submittedVersion, cc-by-nc)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion, other-oa)
  • Griffith Research Online (submittedVersion, cc-by-nc)
Funders
  • Commonwealth Scientific Industrial Research Organization (CSIRO)
  • Science Industry Endowment Fund
  • National Health and Medical Research Council of Australia (1011689)
  • Alzheimer's Association
  • Alzheimer's Drug Discovery Foundation
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cancer-related cognitive impairment studies
Keywords
Alzheimer's disease, amyloid-beta imaging, Pittsburgh compound B, mild cognitive impairment, amnestic MCI, dementia progression, prodromal Alzheimer's disease, memory impairment, hippocampal atrophy, APOE ε4, predictive value, non-demented elderly
MeSH terms
Aged, Aged, 80 and over, Aging, Alzheimer Disease, Apolipoproteins E, Atrophy, Australia, Female, Hippocampus, Humans, Life Style, Male, Memory Disorders, Middle Aged, Predictive Value of Tests, Biomarkers, Single-Blind Method, Amyloid beta-Peptides, Cognitive Dysfunction

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