Statistical Design and Analysis of Label-free LC-MS Proteomic Experiments: A Case Study of Coronary Artery Disease

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Abstract

This chapter presents a case study, which applies statistical design and analysis to an LC–MS-based ­investigation of subjects with coronary artery disease. First, we discuss the principles of statistical ­experimental design, and the specification of an Analysis of Variance (ANOVA) model that describes the major sources of variation in the data. Second, we discuss procedures for detecting differentially abundant proteins, estimating protein abundance in individual samples, testing predefined groups of proteins for enrichment in differential abundance, and calculating sample size for a future experiment. The discussion is accompanied by examples of computer code implemented in the open-source statistical software R, which can be followed for an independent implementation of a similar investigation.

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Clough, T., Braun, S., Fokin, V., Ott, I., Ragg, S., Schadow, G., & Vitek, O. (2011). Statistical Design and Analysis of Label-free LC-MS Proteomic Experiments: A Case Study of Coronary Artery Disease. In Methods in Molecular Biology (Vol. 728, pp. 293–319). Humana Press Inc. https://doi.org/10.1007/978-1-61779-068-3_20

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