As shown, nine overlapping differential expressed genes, including B4GALNT2, B4GALT4, DPM1, FUT3, ST3GAL2, ST3GAL4, ST6GAL1, ST6GALNAC1, and ST6GALNAC2 (Figure 2A) were then transferred to random forest (RF) method to identify genes mostly relevant to CRC patient prognosis in GEO and TCGA cohorts. The gene discussed is ST3GAL2; the disease is colorectal carcinoma.