Two of the most studied glycans in OC, GC and CRC are the sialyl-Tn (STn) antigen, a short-chain glycan resulting from a premature stop in protein O-glycosylation 16, and the sialyl-Lewis A (sLeA) antigen 17, a terminal glycoepitope of carbohydrate chains in glycoproteins and glycolipids. The gene discussed is EEF1A2; the disease is colorectal carcinoma.