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2013 ; 65
(7
): 987-1000
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Statistical analysis of big data on pharmacogenomics
#MMPMID23602905
Fan J
; Liu H
Adv Drug Deliv Rev
2013[Jun]; 65
(7
): 987-1000
PMID23602905
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This paper discusses statistical methods for estimating complex correlation
structure from large pharmacogenomic datasets. We selectively review several
prominent statistical methods for estimating large covariance matrix for
understanding correlation structure, inverse covariance matrix for network
modeling, large-scale simultaneous tests for selecting significantly differently
expressed genes and proteins and genetic markers for complex diseases, and high
dimensional variable selection for identifying important molecules for
understanding molecule mechanisms in pharmacogenomics. Their applications to gene
network estimation and biomarker selection are used to illustrate the
methodological power. Several new challenges of Big data analysis, including
complex data distribution, missing data, measurement error, spurious correlation,
endogeneity, and the need for robust statistical methods, are also discussed.