Neuropathologic assessment of participants in two multi-center longitudinal observational studies

The Alzheimer Disease Neuroimaging Initiative (ADNI) and the Dominantly Inherited Alzheimer Network (DIAN)

the Alzheimer Disease Neuroimaging Initiative and the Dominantly Inherited Alzheimer Network

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

It has been hypothesized that the relatively rare autosomal dominant Alzheimer disease (ADAD) may be a useful model of the more frequent, sporadic, late-onset AD (LOAD). Individuals with ADAD have a predictable age at onset and the biomarker profile of ADAD participants in the preclinical stage may be used to predict disease progression and clinical onset. However, the extent to which the pathogenesis and neuropathology of ADAD overlaps with that of LOAD is equivocal. To address this uncertainty, two multicenter longitudinal observational studies, the Alzheimer Disease Neuroimaging Initiative (ADNI) and the Dominantly Inherited Alzheimer Network (DIAN), leveraged the expertise and resources of the existing Knight Alzheimer Disease Research Center (ADRC) at Washington University School of Medicine, St. Louis, Missouri, USA, to establish a Neuropathology Core (NPC). The ADNI/DIAN-NPC is systematically examining the brains of all participants who come to autopsy at the 59 ADNI sites in the USA and Canada and the 14 DIAN sites in the USA (eight), Australia (three), UK (one) and Germany (two). By 2014, 41 ADNI and 24 DIAN autopsies (involving nine participants and 15 family members) had been performed. The autopsy rate in the ADNI cohort in the most recent year was 93% (total since NPC inception: 70%). In summary, the ADNI/DIAN NPC has implemented a standard protocol for all sites to solicit permission for brain autopsy and to send brain tissue to the NPC for a standardized, uniform and state-of-the-art neuropathologic assessment. The benefit to ADNI and DIAN of the implementation of the NPC is very clear. The NPC provides final "gold standard" neuropathological diagnoses and data against which the antecedent observations and measurements of ADNI and DIAN can be compared.

Original languageEnglish
Pages (from-to)390-400
Number of pages11
JournalNeuropathology
Volume35
Issue number4
DOIs
StatePublished - Aug 1 2015

Fingerprint

Neuroimaging
Observational Studies
Longitudinal Studies
Alzheimer Disease
Autopsy
Brain
Neuropathology
Age of Onset
Uncertainty
Canada
Germany
Disease Progression
Biomarkers
Medicine

Keywords

  • Autosomal dominant Alzheimer disease
  • Late-onset Alzheimer disease
  • Neuropathologic diagnostic criteria
  • Neuropathologic heat map
  • PET-PiB amyloid imaging

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Clinical Neurology

Cite this

Neuropathologic assessment of participants in two multi-center longitudinal observational studies : The Alzheimer Disease Neuroimaging Initiative (ADNI) and the Dominantly Inherited Alzheimer Network (DIAN). / the Alzheimer Disease Neuroimaging Initiative and the Dominantly Inherited Alzheimer Network.

In: Neuropathology, Vol. 35, No. 4, 01.08.2015, p. 390-400.

Research output: Contribution to journalArticle

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abstract = "It has been hypothesized that the relatively rare autosomal dominant Alzheimer disease (ADAD) may be a useful model of the more frequent, sporadic, late-onset AD (LOAD). Individuals with ADAD have a predictable age at onset and the biomarker profile of ADAD participants in the preclinical stage may be used to predict disease progression and clinical onset. However, the extent to which the pathogenesis and neuropathology of ADAD overlaps with that of LOAD is equivocal. To address this uncertainty, two multicenter longitudinal observational studies, the Alzheimer Disease Neuroimaging Initiative (ADNI) and the Dominantly Inherited Alzheimer Network (DIAN), leveraged the expertise and resources of the existing Knight Alzheimer Disease Research Center (ADRC) at Washington University School of Medicine, St. Louis, Missouri, USA, to establish a Neuropathology Core (NPC). The ADNI/DIAN-NPC is systematically examining the brains of all participants who come to autopsy at the 59 ADNI sites in the USA and Canada and the 14 DIAN sites in the USA (eight), Australia (three), UK (one) and Germany (two). By 2014, 41 ADNI and 24 DIAN autopsies (involving nine participants and 15 family members) had been performed. The autopsy rate in the ADNI cohort in the most recent year was 93{\%} (total since NPC inception: 70{\%}). In summary, the ADNI/DIAN NPC has implemented a standard protocol for all sites to solicit permission for brain autopsy and to send brain tissue to the NPC for a standardized, uniform and state-of-the-art neuropathologic assessment. The benefit to ADNI and DIAN of the implementation of the NPC is very clear. The NPC provides final {"}gold standard{"} neuropathological diagnoses and data against which the antecedent observations and measurements of ADNI and DIAN can be compared.",
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