Replication study of plasma proteins relating to Alzheimer's pathology. Issue 9 (31st March 2021)

• Record Type: Journal Article
• Authors: Shi, Liu; Winchester, Laura M.; Westwood, Sarah; Baird, Alison L.; Anand, Sneha N.; Buckley, Noel J; Hye, Abdul; Ashton, Nicholas J.; Bos, Isabelle; Vos, Stephanie J. B.; Kate, Mara ten; Scheltens, Philip; Teunissen, Charlotte E.; Vandenberghe, Rik; Gabel, Silvy; Meersmans, Karen; Engelborghs, Sebastiaan; De Roeck, Ellen E.; Sleegers, Kristel; Frisoni, Giovanni B.; Blin, Olivier; Richardson, Jill C.; Bordet, Régis; Molinuevo, José L.; Rami, Lorena; Wallin, Anders; Kettunen, Petronella; Tsolaki, Magda; Verhey, Frans; Lléo, Alberto; Sala, Isabel; Popp, Julius; Peyratout, Gwendoline; Martinez‐Lage, Pablo; Tainta, Mikel; Johannsen, Peter; Freund‐Levi, Yvonne; Frölich, Lutz; Dobricic, Valerija; Legido‐Quigley, Cristina; Barkhof, Frederik; Andreasson, Ulf; Blennow, Kaj; Zetterberg, Henrik; Streffer, Johannes; Lill, Christina M.; Bertram, Lars; Visser, Pieter Jelle; Kolb, Hartmuth C.; Narayan, Vaibhav A.; Lovestone, Simon; Nevado‐Holgado, Alejo J.;
• Is Part Of: Alzheimer's & dementia. Volume 17:Issue 9(2021)
• Page Start: 1452
• Page End: 1464
• Publication Date: 2021-03-31
• Subjects: Alzheimer's disease -- ATN framework -- biomarker -- dementia -- network analysis -- plasma proteomics -- replication; Alzheimer's disease -- Periodicals; Alzheimer Disease -- Periodicals; Dementia -- Periodicals; Démence; Maladie d'Alzheimer; Périodique électronique (Descripteur de forme); Ressource Internet (Descripteur de forme); 616.83
• DOI: 10.1002/alz.12322
• Languages: English
• ISSNs: 1552-5260

Abstract

Abstract: Introduction: This study sought to discover and replicate plasma proteomic biomarkers relating to Alzheimer's disease (AD) including both the "ATN" (amyloid/tau/neurodegeneration) diagnostic framework and clinical diagnosis. Methods: Plasma proteins from 972 subjects (372 controls, 409 mild cognitive impairment [MCI], and 191 AD) were measured using both SOMAscan and targeted assays, including 4001 and 25 proteins, respectively. Results: Protein co‐expression network analysis of SOMAscan data revealed the relation between proteins and "N" varied across different neurodegeneration markers, indicating that the ATN variants are not interchangeable. Using hub proteins, age, and apolipoprotein E ε4 genotype discriminated AD from controls with an area under the curve (AUC) of 0.81 and MCI convertors from non‐convertors with an AUC of 0.74. Targeted assays replicated the relation of four proteins with the ATN framework and clinical diagnosis. Discussion: Our study suggests that blood proteins can predict the presence of AD pathology as measured in the ATN framework as well as clinical diagnosis.