UST and colorectal cancer: These genes include B3GALT6, B3GAT3, CSGALNACT2, CHPF, DSE, CHST11, CHST12, CHST13, CHST3, CHST7, UST, and CHST14, indicating that chondroitin sulfate biosynthesis enzymes play key roles in colorectal cancer (Figure 4).