Moreover, the median concentration of CXCL7 in the CRC group was 1.82 (IQR: 1.49–2.23) ng/ml, significantly higher than that in the control group (M = 1.02 ng/ml, IQR: 0.81–1.27; P < 0.001; Figure 1A). Here, PPBP is linked to colorectal carcinoma.