Similarly, several sialyltransferases (ST3GAL1, ST3GAL3, ST3GAL5, ST3GAL6, ST6GAL1, ST6GALNAC5, ST6GALNAC6, ST8SIA1, ST8SIA5, and ST8SIA6I) showed differences when comparing the two cancer lines (i.e., T-47D cf. MDA-MB-231). This evidence concerns the gene ST8SIA1 and cancer.