ROC analysis indicated that the area under the curve (AUC) of CEACAM7, CNTN3, CXCL3, CXCL8, SLC1A1, SLC4A4, SLC16A9, and TIMP1 in UC (Figure 8(a)), CRA (Figure 8(b)), and CRC (Figure 8(c)) was greater than 0.7 (p < 0.01). The gene discussed is CEACAM7; the disease is colorectal carcinoma.