This is a combined phase 1 and 2 clinical study. The aim of the study is to assess the safety and efficacy of the immunotherapies using anti- MUC1 CAR T cells alone, anti- MUC1 CAR T combining PD-1 knockout engineered T cells, and PD-1 knockout engineered T cell only in the treatment of patients with advanced esophageal cancer. The treatment outcomes from each group will be compared.
The study is to assess the safety and efficacy of the immunotherapies using anti-MUC1 CAR T cells and /or PD-1 knockout engineered T cells in the treatment of patients with advanced esophageal cancer.