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. 2020 Oct 27;12(1):e12062. doi: 10.1002/dad2.12062

TABLE 2.

Biomarker classification AT(N) pathology among adults with DS

  • **Biomarker classification is independent of Consensus Clinical Staging of Cognitive Continuum

  • AT(N) Biomarker Grouping

  • A: Aggregated Aβ or associated pathophysiologic state

  •  CSF Aβ42, or Aβ42/Aβ40 ratio

  •  Amyloid PET

  • T: Aggregated tau (neurofibrillary tangles) or associated pathophysiologic state

  •  CSF phosphorylated tau

  •  Tau PET

  • (N): Neurodegeneration or neuronal injury

  •  Anatomic MRI

  •  FDG PET

  • CSF total tau

Abbreviations: Aβ, amyloid beta; AT(N), amyloid, tau, neurodegeneration; CSF, cerebrospinal fluid; FDG, 18F‐fluorodeoxyglucose; MRI, magnetic resonance imaging; PET, positron emission tomography