Supporting the relevance of glycolsylation in breast cancer, it was demonstrated that GCNT2—a gene‐encoding glucosaminyl (N‐acetyl) transferase 2 that plays a critical role in glycosylation—is related to basal‐like and metastatic phenotypes in both breast cancer cell lines of human and mouse origins, and of human breast tumour samples. Here, GCNT2 is linked to breast carcinoma.