Table 3.

Comparison of prognosis efficacy of the current signature with two previously developed signatures.

Signature	TCGA		GSE84437		GSE62254
	−2log likelihood	p	−2log likelihood	p	−2log likelihood	p
Current signature	1495.88	<0.001	1512.01	0.002	1507.33	<0.001
CXCR family signature (21)	1685.32	0.005	1683.11	0.004	1502.02	<0.001
Cell cycle-related signature (22)	1501.62	<0.001	1543.96	0.002	1511.03	<0.001

The statistics of −2log likelihood were estimated by Cox proportional hazard regression analysis.