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The impact of demographic, clinical, genetic, and imaging variables on tau PET status

Journal Article · · European Journal of Nuclear Medicine and Molecular Imaging
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  1. Lund Univ. (Sweden). Clinical Memory Research Unit; Vrije Univ., Amsterdam (Netherlands). VU Univ. Medical Center. Amsterdam UMC. Amsterdam Neuroscience. Dept. of Neurology. Alzheimer Center Amsterdam; OSTI
  2. Lund Univ. (Sweden). Clinical Memory Research Unit
  3. Yonsei Univ., Seoul (Korea, Republic of). Gangnam Severance Hospital. Dept. of Neurology
  4. King's College, London (United Kingdom). School of Biomedical Engineering and Imaging Sciences; Univ. College London (United Kingdom). Inst. of Neurology. Dept. of Neurodegenerative Disease. Dementia Research Centre; Univ. College London (United Kingdom). Dept. of Medical Physics. Centre for Medical Image Computing
  5. Lund Univ. (Sweden). Clinical Memory Research Unit; Skåne Univ. Hospital, Lund (Sweden). Dept. of Neurology; Lund Univ. (Sweden). Wallenberg Centre for Molecular Medicine
  6. Skåne Univ. Hospital, Lund (Sweden). Dept. of Radiation Physics
  7. Skåne Univ. Hospital, Lund (Sweden). Dept. of Clinical Physiology and Nuclear Medicine
  8. Lund Univ. (Sweden). Clinical Memory Research Unit; Skåne Univ. Hospital, Malmö (Sweden). Memory Clinic
  9. Yonsei Univ., Seoul (Korea, Republic of). College of Medicine. Gangnam Severance Hospital. Dept. of Nuclear Medicine
  10. Yonsei Univ., Seoul (Korea, Republic of). College of Medicine. Gangnam Severance Hospital. Dept. of Nuclear Medicine; Korea Inst. Radiological and Medical Sciences, Seoul (Korea, Republic of). Division of applied RI
  11. Univ. of California, San Francisco, CA (United States). Dept. of Neurology, Memory and Aging Center
  12. F. Hoffmann-La Roche Ltd, Basel (Switzerland)
  13. Avid Radiopharmaceuticals, Philadelphia, PA (United States)
  14. McGill Univ., Montreal, QC (Canada). Douglas Mental Health University Inst. Depts. of Psychiatry and Neurology & Neurosurgery
  15. F. Hoffmann-La Roche Ltd, Basel (Switzerland); Univ. of California, San Francisco, CA (United States). Dept. of Radiology and Biomedical Imaging; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Biophysics and Integrated Bioimaging Division
Purpose: A substantial proportion of amyloid-β (Aβ)+ patients with clinically diagnosed Alzheimer’s disease (AD) dementia and mild cognitive impairment (MCI) are tau PET–negative, while some clinically diagnosed non-AD neurodegenerative disorder (non-AD) patients or cognitively unimpaired (CU) subjects are tau PET–positive. We investigated which demographic, clinical, genetic, and imaging variables contributed to tau PET status. Methods: We included 2338 participants (430 Aβ+ AD dementia, 381 Aβ+ MCI, 370 non-AD, and 1157 CU) who underwent [18F]flortaucipir (n = 1944) or [18F]RO948 (n = 719) PET. Tau PET positivity was determined in the entorhinal cortex, temporal meta-ROI, and Braak V-VI regions using previously established cutoffs. We performed bivariate binary logistic regression models with tau PET status (positive/negative) as dependent variable and age, sex,APOEε4, Aβ status (only in CU and non-AD analyses), MMSE, global white matter hyperintensities (WMH), and AD-signature cortical thickness as predictors. Additionally, we performed multivariable binary logistic regression models to account for all other predictors in the same model. Results: Tau PET positivity in the temporal meta-ROI was 88.6% for AD dementia, 46.5% for MCI, 9.5% for non-AD, and 6.1% for CU. Among Aβ+ participants with AD dementia and MCI, lower age, MMSE score, and AD-signature cortical thickness showed the strongest associations with tau PET positivity. In non-AD and CU participants, presence of Aβ was the strongest predictor of a positive tau PET scan. Conclusion: We identified several demographic, clinical, and neurobiological factors that are important to explain the variance in tau PET retention observed across the AD pathological continuum, non-AD neurodegenerative disorders, and cognitively unimpaired persons.
Sponsoring Organization:
Alzheimer's Association; Alzheimer's Society; National Institutes of Health (NIH); Rainwater Charitable; USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1816071
Alternate ID(s):
OSTI ID: 23046007
Journal Information:
European Journal of Nuclear Medicine and Molecular Imaging, Journal Name: European Journal of Nuclear Medicine and Molecular Imaging Journal Issue: 7 Vol. 48; ISSN 1619-7070
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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