Volume 73, Issue 2 pp. 615-624
BIOMETRIC PRACTICE

A Bayesian integrative approach for multi-platform genomic data: A kidney cancer case study

Thierry Chekouo

Thierry Chekouo

Department of Mathematics and Statistics, University of Minnesota Duluth, Duluth, MN 55812, USA

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Francesco C. Stingo

Corresponding Author

Francesco C. Stingo

Dipartimento di Statistica, Informatica, Applicazioni “G.Parenti”, University of Florence, 50134 Florence, Italy

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James D. Doecke

James D. Doecke

CSIRO Health and Biosecurity/Australian e-Health Research Center Level 5, Queensland 4029, Australia

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Kim-Anh Do

Kim-Anh Do

Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA

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First published: 26 September 2016
Citations: 9

Summary

Integration of genomic data from multiple platforms has the capability to increase precision, accuracy, and statistical power in the identification of prognostic biomarkers. A fundamental problem faced in many multi-platform studies is unbalanced sample sizes due to the inability to obtain measurements from all the platforms for all the patients in the study. We have developed a novel Bayesian approach that integrates multi-regression models to identify a small set of biomarkers that can accurately predict time-to-event outcomes. This method fully exploits the amount of available information across platforms and does not exclude any of the subjects from the analysis. Through simulations, we demonstrate the utility of our method and compare its performance to that of methods that do not borrow information across regression models. Motivated by The Cancer Genome Atlas kidney renal cell carcinoma dataset, our methodology provides novel insights missed by non-integrative models.

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