We intend to apply camrelizumab plus stereotactic body radiotherapy at oligometastatic lesions to patients with oligometastatic nasopharyngeal carcinoma whose primary lesion has been well controlled after radical treatment through this multicenter randomized phase 3 trial to investigate whether stereotactic body radiotherapy at oligometastatic lesions on the basis of immunotherapy can achieve clinical cure among a part of patients with distant metastasis and improve their overall survival.
We intend to compare the efficacy and safety of immunotherapy plus stereotactic body radiotherapy at oligometastatic lesions and immunotherapy alone among patients with oligometastatic nasopharyngeal carcinoma whose primary lesion has been well controlled after radical local-regional treatment through this multicenter randomized phase 3 trial.