Connecting Cohorts to Diminish Alzheimer's Disease (CONCORD-AD): A Report of an International Research Collaboration Network

Valory N. Pavlik, Samantha C. Burnham, Joseph S. Kass, Catherine Helmer, Sebastian Palmqvist, Maria Vassilaki, Jean François Dartigues, Oskar Hansson, Colin L. Masters, Karine Pérès, Ronald C. Petersen, Erik Stomrud, Lesley Butler, Preciosa M. Coloma, Xavier M. Teitsma, Rachelle Doody, Mary Sano

Research output: Contribution to journalReview articlepeer-review


Longitudinal observational cohort studies are being conducted worldwide to understand cognition, biomarkers, and the health of the aging population better. Cross-cohort comparisons and networks of registries in Alzheimer's disease (AD) foster scientific exchange, generate insights, and contribute to the evolving clinical science in AD. A scientific working group was convened with invited investigators from established cohort studies in AD, in order to form a research collaboration network as a resource to address important research questions. The Connecting Cohorts to Diminish Alzheimer's Disease (CONCORD-AD) collaboration network was created to bring together global resources and expertise, to generate insights and improve understanding of the natural history of AD, to inform design of clinical trials in all disease stages, and to plan for optimal patient access to disease-modifying therapies once they become available. The network brings together expertise and data insights from 7 cohorts across Australia, Europe, and North America. Notably, the network includes populations recruited through memory clinics as well as population-based cohorts, representing observations from individuals across the AD spectrum. This report aims to introduce the CONCORD-AD network, providing an overview of the cohorts involved, reporting the common assessments used, and describing the key characteristics of the cohort populations. Cohort study designs and baseline population characteristics are compared, and available cognitive, functional, and neuropsychiatric symptom data, as well as the frequency of biomarker assessments, are summarized. Finally, the challenges and opportunities of cross-cohort studies in AD are discussed.

Original languageEnglish (US)
Pages (from-to)31-45
Number of pages15
JournalJournal of Alzheimer's Disease
Issue number1
StatePublished - 2022


  • Alzheimer's disease
  • CONCORD-AD network
  • biomarkers
  • cognitive function
  • cohort
  • dementia
  • observational study
  • population characteristics

ASJC Scopus subject areas

  • General Neuroscience
  • Clinical Psychology
  • Geriatrics and Gerontology
  • Psychiatry and Mental health


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