RecruitingPhase 1Biological interventionAutologous huMNC2-CAR44 or huMNC2-CAR22 T Cells for Breast Cancer Targeting Cleaved Form of MUC1 (MUC1*)Phase I/II study of adoptive immunotherapy for advanced MUC1\* positive breast cancer with autologous T cells engineered to express either a chimeric antigen receptor, huMNC2-CAR44 or huMNC2-CAR22, which are specific for a cleaved form of MUC1 (MUC1\*).