CAR-T cell therapy for liver metastases
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Liver metastases are the most common cause of death in colorectal cancer patients. The standard of care and potential for cure for colorectal liver metastases is resection, but often times disease it too extensive for this treatment. Over the years, cancer research has made way for advances in treating progressive disease through immunotherapy. By genetically modifying an individual’s immune system using virally transduced chimeric antigen receptor T cells (CAR-T), patients are better able to receive exquisitely specific T cells to target specific tumors. Furthermore, selective delivery strategies may enhance efficacy while limiting detrimental, systemic adverse effects. Not only this, CAR-Ts have also lead to complete remission in some liquid tumors while maintaining the potential for remission in solid tumors as well. This literature review takes readers through the emergence of the different generations of CAR-T and the various studies including clinical trials that have demonstrated the safety and efficacy of CAR-T. The second portion of this paper will outline the design for a phase II clinical trial using intrahepatic CAR-T therapy in addition to selective internal radiation therapy (SIRT) for refractory CEA+ colorectal liver metastases. Benefits and limitations of using these therapies are further discussed.