Abstract

SomaScan is a high-throughput, aptamer-based proteomics assay designed for the simultaneous measurement of thousands of proteins with a broad range of endogenous concentrations. In its most current version, the 7k SomaScan assay v4.1 is capable of measuring 7288 human proteins. In this work, we present an extensive technical assessment of this platform based on a study of 2050 samples across 22 plates. Included in the study design were inter-plate technical duplicates from 102 human subjects, which allowed us to characterize different normalization procedures, evaluate assay variability by multiple analytical approaches, present signal-over-background metrics, and discuss potential specificity issues. By providing detailed performance assessments on this wide range of technical aspects, we aim for this work to serve as a valuable resource for the growing community of SomaScan users.

Details

Title
Assessment of variability in the plasma 7k SomaScan proteomics assay
Author
Candia, Julián 1 ; Daya, Gulzar N. 2 ; Tanaka, Toshiko 1 ; Ferrucci, Luigi 1 ; Walker, Keenan A. 2 

 National Institutes of Health, Translational Gerontology Branch, National Institute on Aging, Baltimore, USA (GRID:grid.94365.3d) (ISNI:0000 0001 2297 5165) 
 National Institutes of Health, Laboratory of Behavioral Neuroscience, National Institute on Aging, Baltimore, USA (GRID:grid.94365.3d) (ISNI:0000 0001 2297 5165) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2724429878
Copyright
© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.