Through univariate Cox regression analysis, twenty glycogenes, ALG2, ALG3, B3GNT3, B4GALNT2, C1GALT1C1, CHST10, DPAGT1, FUT11, FUT3, FUT7, GALNT1, GALNT9, HS3ST5, HS6ST2, NDST4, RFNG, SLC35A2, SLC35A3, ST3GAL1, and ST6GALNAC4, were found to be correlated with the OS of breast cancer patients. The gene discussed is B3GNT3; the disease is breast cancer.