Because the type and amount of glycosylation of cancer cell mainly rely on the activity of glycosyltransferases and glycosidases 20, 41, we used an alternative strategy focusing on the expression levels of glycogenes from the numerous public transcriptomic data, and identified the glycogene, ST3GAL6, as a potential biomarker for molecular stratification in UBCs. Here, ST3GAL6 is linked to cancer.