Volume 13, Issue 2 p. 186-195
Perspective

Recommended cognitive outcomes in preclinical Alzheimer's disease: Consensus statement from the European Prevention of Alzheimer's Dementia project

Karen Ritchie

Corresponding Author

Karen Ritchie

Institut National de la Sante et de la Recherche Medicale, U1061 Neuropsychiatrie, Montpellier, France

University of Montpellier, Montpellier, France

Centre for Dementia Prevention, University of Edinburgh, Edinburgh, UK

Joint first authors.

Corresponding author. Tel.: +33 4 99614560; Fax: +33 4 99614579.

E-mail address: [email protected]

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Michael Ropacki

Michael Ropacki

Clinical Research, Neurosciences, Janssen, South San Francisco, CA, USA

Joint first authors.

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Bruce Albala

Bruce Albala

Clinical Research, Neuroscience and General Medicine, Eisai Inc, Woodcliff Lake, NJ, USA

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John Harrison

John Harrison

Metis Cognition Ltd, Kilmington Common, UK

Alzheimer Center VUmc, Amsterdam, Holland

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Jeffrey Kaye

Jeffrey Kaye

Neurology and Biomedical Engineering, Oregon Health and Science University, Portand, OR, USA

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Joel Kramer

Joel Kramer

Department of Neurology Memory and Ageing Centre, University of California at San Francisco, San Francisco, CA, USA

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Christopher Randolph

Christopher Randolph

Department of Neurology, Loyola University Medical Center, Maywood, IL, USA

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Craig W. Ritchie

Craig W. Ritchie

Centre for Dementia Prevention, University of Edinburgh, Edinburgh, UK

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First published: 01 October 2016
Citations: 71

Abstract

The Horizon 2020/IMI European Prevention of Alzheimer's Dementia (EPAD) project will undertake large-scale proof-of-concept trials in predementia Alzheimer's disease (AD). Within EPAD, the monitoring of cognitive trajectories in the preclinical period will constitute a central outcome measure; however, there are currently no clear guidelines as to how this should be achieved as most measures have been developed for the period around dementia diagnosis. The EPAD Scientific Advisory Group for Clinical and Cognitive Outcomes identified appropriate cognitive measures based on a literature search covering both cognitive correlates of preclinical brain changes from imaging studies and cognitive changes observed over time in nondementia population cohorts developing incident dementia. These measures were evaluated according to the following criteria: validity, coherence with biomarker changes, psychometric properties, cross-cultural suitability, availability of alternative forms, and normative data limited practice effects. The resulting consensus statement provides recommendations for both future drug trials and research into preclinical Alzheimer's disease.