Table 2.

C-index of the Cox proportional hazards models based on different features

Feature type	Features	C-index	P-value
Gene expression	330 significant univariate genes	0.584	0.0011
	118 significant univariate genes with hazard ratio > 1.221	0.636	<  0.0001
	88 significant univariate genes selected by GA	0.656	<  0.0001
Somatic mutation	25 functional annotations	0.603	0.0012
	15 gene ontology terms	0.567	0.0013
	14 pathways	0.548	0.0037
	54 functional gene sets combining functional annotations, GO terms and pathways	0.591	0.0016
Gene expression & somatic mutation	All 142 features (88 significant univariate genes and 54 functional gene sets)	0.658	<  0.0001