To evaluate the clinical outcome in patients with de novo metastatic nasopharyngeal carcinoma (NPC) treated or not treated with locoregional radiotherapy (LRRT) based on plasma Epstein–Barr virus (EBV) DNA level and tumor response after palliative chemotherapy (PCT). | Identifying optimal candidates for local treatment of the primary tumor among patients with de novo metastatic nasopharyngeal carcinoma A retrospective cohort study based on Epstein Barr virus DNA level and tumor response to palliative chemotherapy
