Indeed, in healthy cells MUC1 contains extended, core 2-based glycans that are formed by N-acetylglucosamine attachment to the GalNAc of core 1, while on the MUC1 expressed by tumor cells the glycans are shorter, core 1-based and richer in ST, Tn, and T glycans [11–13]. Here, MUC1 is linked to neoplasm.