Among the O-glycan changes associated with CRC is the expression of specific, abnormally truncated glycans [9], such as the Tn antigen (﻿CD175, GalNAcα1-O-Ser/Thr) and its sialylated form sialyl Tn (STn) (CD175s, Neu5Acα2-6GalNAcα1-O-Ser/Thr). The gene discussed is EEF1A2; the disease is colorectal carcinoma.