This is a single-arm, multicenter, prospective, open-label phase II clinical trial of multi-target radiotherapy combined with PD-1 monoclonal antibody and capecitabine maintenance therapy treating oligometastatic nasopharyngeal carcinoma, the main purpose of which is to evaluate the efficacy of multi-target radiotherapy combined with PD-1 monoclonal antibody and capecitabine maintenance therapy regimen in treating oligometastatic nasopharyngeal carcinoma.
The patient was histologically or cytologically diagnosed with nasopharyngeal carcinoma;
The patient was newly diagnosed with metastatic nasopharyngeal carcinoma (AJCC eighth edition), and after 4-6 cycles of gemcitabine plus cisplatin combined with PD-1 monoclonal antibody regimen, the efficacy reached more than stable disease;
Except for the primary tumor and cervical lymph node metastasis, less than 5 distant organ metastases, and were suitable for SBRT radiotherapy;
ECOG PS score 0-2 points;
Recurrent and metastatic nasopharyngeal carcinoma after initial treatment;
Patients received previous treatment of primary lesion or metastasis except for the standard first-line regimen (gemcitabine plus cisplatin combined with PD-1 monoclonal antibody regimen), including induction chemotherapy, adjuvant chemotherapy, concurrent chemoradiotherapy, surgery and other treatments;
Central nervous system metastastic (confirmed or suspected);
Allergy to PD-1 monoclonal antibody or other PD-1 monoantibody; intolerance or allergy to capecitabine; suffering any disease or extrinsic factors affecting oral drugs;