The program aims to enroll patients with stage high risk (AJCC 8th, T3-4N2-3M0) locoregionally advanced nasopharyngeal carcinoma (LANPC). Patients will receive 3 cycles of induction chemotherapy with gemcitabine and cisplatin and concurrent cisplatin-radiation plus Sintilimab (200mg q3wk), and then receive 11 cycles of Sintilimab after intensity-modulated radiotherapy (IMRT). All patients will receive IMRT. IMRT：PGTVnx: 69.96 Gy /33f, PGTVnd: 66~70 Gy /33f, PCTVnd: 63~64 Gy/33f, PCTV1: 60~62 Gy/33f, PCTV2: 54~56 Gy/33f. Sintilimab will begin on day 1 of induction chemotherapy and continue every 3 weeks for 17 cycles.
The program aims to enroll patients with stage high risk (AJCC 8th, T3-4N2-3M0) . Patients will receive 3 cycles of induction chemotherapy with gemcitabine and cisplatin and concurrent cisplatin-radiation plus Sintilimab, and then receive 11 cycles of Sintilimab after intensity-modulated radiotherapy (IMRT). All patients will receive IMRT. Sintilimab will begin on day 1 of induction chemotherapy and continue every 3 weeks for 17 cycles.