Table 5.

Performance characteristics of the 44-gene expression signature in two test sets

	Test Set 1			Test Set 2
	n	Sensitivity	Specificity	n	Sensitivity	Specificity
Normal	129	94.6%	100.0%	8	100.0%	98.3%
ccRCC	534	94.2%	95.7%	26	96.2%	96.1%
chRCC	66	90.9%	97.8%	40	92.5%	97.8%
pRCC	291	92.1%	97.8%	28	89.3%	99.0%
Oncocytoma	/	/	/	27	92.6%	98.2%
Total	1020	Overall accuracy = 93.4%		129	Overall accuracy = 93.0%