Regarding N-glycans, bisecting GlcNAc has been identified as a hallmark of epithelial ovarian cancer and mannosyl β(1 → 4)-glycoprotein β(1 → 4)-N-acetylglucosaminyltransferase (MGAT3), the glycosyltransferase involved in its biosynthesis, showed a clear upregulation in ovarian cancer (26). Here, MGAT3 is linked to ovarian carcinoma.