An abscopal effect in a case of concomitant treatment of locally and peritoneally recurrent gastric cancer using adoptive T-cell immunotherapy and radiotherapy.

The mechanism of abscopal effect is becoming clear by the progress of cancer immunology. A 54-year-old male with recurrent gastric cancer presented an abscopal effect after radiotherapy with concurrent adoptive T-cell immunotherapy (immunoradiotherapy). Immunoradiotherapy has potential to induce abscopal effect by strengthening systemic antitumor immunity even in recurrent cancer.