The highest non-severely toxic dose was 5×108 CAR-T cells/kg. In the clinical case report, we present a case with unresectable advanced gastric cancer achieved pathological complete response 10 months after IMC002 infusion and no signs of recurrence were indicated in subsequent clinical and radiological follow-ups. IMC002 shows effectiveness and safety in CLDN18.2-positive gastric and pancreatic cancer and its favorable profiles support further clinical development.
We also demonstrate that removal of shared CD7 antigens enabled compatibility of BE-CAR33 and BE-CARCLL-1 with BE-CAR7 T cells, including in a patient-derived xenograft (PDX) model of AML. Therapeutic strategies envisage 'pick and mix' applications of base edited "universal" CAR T cells in combination determined by patient-specific antigen profiles. Such approaches also offer the possibility of deep, cell-based, de-bulking and conditioning ahead of allo-SCT and subsequent donor-derived reconstitution.