Table 1. mRNA changes after sunitinib treatment in KURC1 and KURC2 xenograft tumors.

refseq	genedescription	genesymbol	KURC1R/C	KURC1S/C	KURC2S/C
NM_000640	interleukin 13 receptor, alpha 2	IL13RA2	6.50	0.99	1.45
NM_004686	myotubularin related protein 7	MTMR7	3.37	1.21	1.13
NM_021165	family with sequence similarity 5, member B	FAM5B	2.95	1.10	0.88

Microarray analysis was performed using Affymetrix GeneChip Human Gene 1.0 ST Arrays. These 3 genes were up-regulated more than 2.5-fold expression in sunitinib-resistant KURC1 tumor xenograft compared with control.