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Discovery and validation of plasma proteomic biomarkers relating to brain amyloid burden by SOMAscan assay

Liu Shi*, Sarah Westwood, Alison L. Baird, Laura Winchester, Valerija Dobricic, Fabian Kilpert, Shengjun Hong, Andre Franke, Abdul Hye, Nicholas J. Ashton, Angharad R. Morgan, Isabelle Bos, Stephanie J.B. Vos, Noel J. Buckley, Mara ten Kate, Philip Scheltens, Rik Vandenberghe, Silvy Gabel, Karen Meersmans, Sebastiaan EngelborghsEllen E. De Roeck, Kristel Sleegers, Giovanni B. Frisoni, Olivier Blin, Jill C. Richardson, Régis Bordet, José L. Molinuevo, Lorena Rami, Anders Wallin, Petronella Kettunen, Magda Tsolaki, Frans Verhey, Alberto Lleó, Daniel Alcolea, Julius Popp, Gwendoline Peyratout, Pablo Martinez-Lage, Mikel Tainta, Peter Johannsen, Charlotte E. Teunissen, Yvonne Freund-Levi, Lutz Frölich, Cristina Legido-Quigley, Frederik Barkhof, Kaj Blennow, Henrik Zetterberg, Susan Baker, B. Paul Morgan, Johannes Streffer, Pieter Jelle Visser, Lars Bertram, Simon Lovestone, Alejo J. Nevado-Holgado

*Korrespondierende/r Autor/-in für diese Arbeit

Abstract

Introduction: Plasma proteins have been widely studied as candidate biomarkers to predict brain amyloid deposition to increase recruitment efficiency in secondary prevention clinical trials for Alzheimer's disease. Most such biomarker studies are targeted to specific proteins or are biased toward high abundant proteins. Methods: 4001 plasma proteins were measured in two groups of participants (discovery group = 516, replication group = 365) selected from the European Medical Information Framework for Alzheimer's disease Multimodal Biomarker Discovery study, all of whom had measures of amyloid. Results: A panel of proteins (n = 44), along with age and apolipoprotein E (APOE) ε4, predicted brain amyloid deposition with good performance in both the discovery group (area under the curve = 0.78) and the replication group (area under the curve = 0.68). Furthermore, a causal relationship between amyloid and tau was confirmed by Mendelian randomization. Discussion: The results suggest that high-dimensional plasma protein testing could be a useful and reproducible approach for measuring brain amyloid deposition.

OriginalspracheEnglisch
ZeitschriftAlzheimer's and Dementia
Jahrgang15
Ausgabenummer11
Seiten (von - bis)1478-1488
Seitenumfang11
ISSN1552-5260
DOIs
PublikationsstatusVeröffentlicht - 11.2019

Fördermittel

This research was conducted as part of the EMIF-AD project, which has received support from the Innovative Medicines Initiative Joint Undertaking under EMIF grant agreement no. 115372 , resources of which are composed of financial contribution from the European Union's Seventh Framework Program (FP7/2007-2013), and EFPIA companies' in-kind contribution. The DESCRIPA study was funded by the European Commission within the 5th framework program (QLRT-2001-2455). The EDAR study was funded by the European Commission within the 5th framework program (contract # 37670 ). The Leuven cohort was funded by the Stichting voor Alzheimer Onderzoek (grant numbers #11020, #13007, and #15005). R.V. is a senior clinical investigator of the Flemish Research Foundation (FWO). J.S. is currently an employee of UCB, Braine-l’Alleud, Belgium. The San Sebastian GAP study is partially funded by the Department of Health of the Basque Government (allocation 17.0.1.08.12.0000.2.454.01.41142.001.H). The authors acknowledge the contribution of the personnel of the Genomic Service Facility at the VIB-U Antwerp Center for Molecular Neurology. The research at VIB-CMN is funded in part by the University of Antwerp Research Fund. F.B. is supported by the NIHR biomedical research centre at UCLH. L.S. is funded by DPUK through MRC (grant no. MR/L023784/2 ) and the UK Medical Research Council Award to the University of Oxford (grant no. MC_PC_17215 ).

UN SDGs

Dieser Output leistet einen Beitrag zu folgendem(n) Ziel(en) für nachhaltige Entwicklung

  1. SDG 3 – Gesundheit und Wohlergehen
    SDG 3 – Gesundheit und Wohlergehen
  2. SDG 10 – Weniger Ungleichheiten
    SDG 10 – Weniger Ungleichheiten

Strategische Forschungsbereiche und Zentren

  • Querschnittsbereich: Medizinische Genetik

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