The trial plans to enroll patients with stage III-IVA (AJCC 8th, except T3N0-1 or T4N0) locoregionally-advanced nasopharyngeal carcinoma (LANPC). Patients will be randomized in a 1:1 ratio to receive 3 cycles of induction chemotherapy with gemcitabine and cisplatin and concurrent cisplatin-radiation or the same regimen plus cadonilimab in induction chemotherapy and adjuvant chemotherapy. All patients will receive intensity-modulated radiotherapy (IMRT). Cadonilimab will begin on day 1 of induction chemotherapy and continue every 3 weeks for 3 cycles in induction therapy and for 14 cycles in adjuvant therapy.
The trial aimed to compare cadonilimab combined with induction chemotherapy plus concurrent chemoradiotherapy (IC+CCRT) versus IC+CCRT alone in high-risk locoregionally-advanced nasopharyngeal carcinoma (LANPC).