NDRG2 gene copy number is not altered in colorectal carcinoma

Table 2 ddCt values and corresponding copy numbers for the NDRG2 and MYC genes in colorectal cancer cell lines

Cell line	NDRG2 - 5’ end		NDRG2 - 3’ end		MYC
	ddCt ± SD	Copy number	ddCt ± SD	Copy number	ddCt ± SD	Copy number
LoVo	1.23 ± 0.47	2	1.12 ± 0.51	2	0.91 ± 0.31	2
DLD-1	1.04 ± 0.23	2	1.08 ± 0.50	2	0.74 ± 0.22	Loss
SW-480	1.04 ± 0.26	2	0.94 ± 0.44	2	4.88 ± 0.30	Gain

Copy number loss is defined as ddCt < 0.75 and a gain is defined as ddCt > 1.25. ddCt: Delta delta Ct; SD: Standard deviation.