Cited by 21Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsAmyotrophic Lateral Sclerosis Research

Data-driven regions of interest for longitudinal change in three variants of frontotemporal lobar degeneration

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Binney, Richard J., Pankov, Aleksandr, Marx, Gabriel, He, Xuanzie, McKenna, Faye, Staffaroni, Adam M., Kornak, John, Attygalle, Suneth +7 more·2017·Brain and Behavior

Abstract

Introduction: Longitudinal imaging of neurodegenerative disorders is a potentially powerful biomarker for use in clinical trials. In Alzheimer's disease, studies have demonstrated that empirically derived regions of interest (ROI s) can provide more reliable measurement of disease progression compared with anatomically defined ROI s. Methods: We set out to derive ROI s with optimal effect size for quantifying longitudinal change in a hypothetical clinical trial by comparing atrophy rates in 44 patients with behavioral variant of frontotemporal dementia (bv FTD), 30 with the semantic variant primary progressive aphasia (sv PPA), and 26 with the nonfluent variant PPA (nfv PPA) to atrophy in 97 cognitively healthy controls. Results: The regions identified for each variant were generally what would be expected from prior studies of frontotemporal lobar degeneration (FTLD). Sample size estimates for detecting a 40% reduction in annual rate of ROI atrophy varied substantially across groups, being 103 per arm in bv FTD, 31 in nfv PPA, and 10 in sv PPA, but in all groups were less than those estimated for a priori ROI s and clinical measures. The variability in location of peak regions of atrophy across individuals was highest in bv FTD and lowest in sv PPA, likely relating to the differences in effect size. Conclusions: These findings suggest that, while cross‐validated maps of change can improve sensitivity to change in FTLD compared with a priori regions, the reliability of these maps differs considerably across syndromes. Future studies can utilize these maps to design clinical trials, and should try to identify factors accounting for the variability in patterns of atrophy across individuals, particularly those with bv FTD.

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Authors
Binney, R. J., Pankov, A., Marx, G., He, X., McKenna, F., Staffaroni, A. M., Kornak, J., Attygalle, S., Boxer, A. L., Schuff, N., Gorno‐Tempini, M., Weiner, M. W., Kramer, J. H., Miller, B. L., & Rosen, H. J.
Affiliations
University of California, San Francisco (US)
Corresponding author
Rosen, Howard J.
Venue
Brain and Behavior
Publisher
Wiley
Published
2017-03-23
Volume
7
Issue
4
Pages
e00675-e00675
ISSN
  • 2157-9032 (ISSN-L)
  • 2162-3279
OpenAlex
W2601677619
Cited by
21
References
51
Citations by year
2025: 1 · 2024: 1 · 2023: 4 · 2022: 1 · 2021: 3 · 2020: 2 · 2019: 6 · 2018: 1 · 2017: 2
FWCI
2.47
Type
journal article
Language
en
Open access
Locations
  • Brain and Behavior (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Science Foundation (1144247)
  • National Institute of General Medical Sciences (T32GM067547)
  • National Institutes of Health (AG045333, AG032306, U54NS092089, R01AG038791, AG019724, AG023501)
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 › Neurology › Amyotrophic Lateral Sclerosis Research
Keywords
frontotemporal lobar degeneration, behavioral variant frontotemporal dementia, semantic dementia, region of interest, brain atrophy, longitudinal change, neuroimaging biomarkers, clinical trial design, sample size determination, effect size
MeSH terms
Aged, Atrophy, Female, Humans, Longitudinal Studies, Magnetic Resonance Imaging, Male, Mental Status Schedule, Middle Aged, Neuropsychological Tests, Retrospective Studies, Disease Progression, Aphasia, Primary Progressive, Frontotemporal Lobar Degeneration

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