ST8SIA1 and breast cancer: Specifically, increased expression of ST3GAL1, ST3GAL2, ST3GAL3, ST6GAL1, ST6GAL2, ST6GALNAC2, ST8SIA1, ST8SIA4, and ST8SIA6-AS1 is associated with tumorigenesis, while ST6GALNAC2 is linked to the inhibition of tumorigenesis in BC [130].