Compared with paired adjacent normal colorectal tissues, the VDR mRNA expression markedly decreased in 33 consecutive CRC tissues among the 64 aforementioned fresh specimens from Nanfang Hospital (Figure 7B), and correlation analysis verified a close relation between VDR and NAT2 (r = 0.66, p < 0.001; Figure 7C). Here, NAT2 is linked to colorectal carcinoma.