The Alzheimer's Disease Neuroimaging Initiative 2 Biomarker Core: A review of progress and plans

Alzheimers Dement. 2015 Jul;11(7):772-91. doi: 10.1016/j.jalz.2015.05.003.

Abstract

Introduction: We describe Alzheimer's Disease Neuroimaging Initiative (ADNI) Biomarker Core progress including: the Biobank; cerebrospinal fluid (CSF) amyloid beta (Aβ1-42), t-tau, and p-tau181 analytical performance, definition of Alzheimer's disease (AD) profile for plaque, and tangle burden detection and increased risk for progression to AD; AD disease heterogeneity; progress in standardization; and new studies using ADNI biofluids.

Methods: Review publications authored or coauthored by ADNI Biomarker core faculty and selected non-ADNI studies to deepen the understanding and interpretation of CSF Aβ1-42, t-tau, and p-tau181 data.

Results: CSF AD biomarker measurements with the qualified AlzBio3 immunoassay detects neuropathologic AD hallmarks in preclinical and prodromal disease stages, based on CSF studies in non-ADNI living subjects followed by the autopsy confirmation of AD. Collaboration across ADNI cores generated the temporal ordering model of AD biomarkers varying across individuals because of genetic/environmental factors that increase/decrease resilience to AD pathologies.

Discussion: Further studies will refine this model and enable the use of biomarkers studied in ADNI clinically and in disease-modifying therapeutic trials.

Keywords: ADNI; Alzheimer's disease; Aβ(1–42); Biomarkers; Cerebrospinal fluid; Disease-modifying therapy; Immunoassay; Mild cognitive impairment; Plasma; Tau.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Alzheimer Disease / cerebrospinal fluid*
  • Alzheimer Disease / diagnosis*
  • Amyloid beta-Peptides / cerebrospinal fluid*
  • Databases, Bibliographic / statistics & numerical data
  • Humans
  • Peptide Fragments / cerebrospinal fluid*
  • tau Proteins / cerebrospinal fluid*

Substances

  • Amyloid beta-Peptides
  • Peptide Fragments
  • amyloid beta-protein (1-42)
  • tau Proteins