CliPPER

CliPPER is an empirical method based on Gaussian graphical models that (i) selects pathways with covariance matrices or means significantly different between two experimental conditions; (ii) on such pathways, identifies the portions of the pathways, called signal paths, mostly associated to the phenotype. The significant pathways reported have both tests significant at alpha level <= 0.05.

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Pathway alphaMean alphaVar
Legionellosis 0.0 0.06
Osteoclast differentiation 0.03 0.28
NF-kappa B signaling pathway 0.0 0.39
Influenza A 0.02 0.38
One carbon pool by folate 0.5 0.0
Type II diabetes mellitus 0.47 0.05
Natural killer cell mediated cytotoxicity 0.05 0.58
Herpes simplex infection 0.05 0.66
Prion diseases 0.67 0.04
Acute myeloid leukemia 0.71 0.04
Salivary secretion 0.7 0.05
Bile secretion 0.81 0.01
Phototransduction 0.87 0.0

  • alphaVar = adjusted p-value of CliPPER test on the concentration matrices of the pathway between groups.
  • alphaMean = adjusted p-values of CliPPER test on the means of the pathways between groups.