MUC1 and cancer: The findings of the present study have direct implications for the development of improved MUC1-based tools for the diagnosis and therapy of breast and other types of cancer, considering that a mAb explored in the present study, 115D8, is widely used to detect serum biomarker CA15-3, and that 5E5, SM3 and HMFG2 are used to develop chimeric antigen receptor T-cells25,26.