[Development of dual-targeted CAR T-cell therapy]

Chimeric antigen receptor T-cell therapy (CAR-T-cell therapy) has revolutionized the treatment of relapsed and refractory hematological malignancies. Targeting of the CD19 antigen on B cells has yielded high rates of remission induction and sustained remission in patients with acute lymphoblastic leukemia and B-cell lymphomas. Despite these remarkable responses, many escape mechanisms from CAR-T cell therapy have been identified, with the most common being target antigen deficiency. This paper focuses on CD19 CAR-T cell therapies, which are currently the most clinically used, and describes new strategies to overcome resistance using multi-targeted CAR-T cells, such as CD19-CD20 CAR-T cells and CD19-CD22 CAR-T cells, which are being developed in preclinical and clinical trials.