Anti-tn-muc1 CAR T cells have anti-tumor effects in pancreatic cancer, suggesting that the recognition of glycosylated mucin phenotypes can not only promote the therapeutic efficacy of conventional antibodies and other drugs, but also improve the therapeutic effect of CAR T. Identifying epitopes on MUC16 may be an important means to improve the efficacy of CAR-T in the future. Here, MUC5AC is linked to neoplasm.