Adding PD-1 Inhibitor to Neoadjuvant and Adjuvant for NPC

neoadjuvant: PD-1 inhibitor Toripalimab 240mg combined with neoadjuvant chemotherapy by cis Platinum and gemcitabine every 3 weeks for 3 cycles ; adjuvant: Toripalimab 240mg every 3 weeks for 9 cycles after concurrent chemoradiotherapy

neoadjuvant chemotherapy: 1000mg/m2 in day 1 and day 8 and repeats every 3 weeks for 3 cycles

neoadjuvant chemotherapy: 80mg/m2 in day 1, and repeats every 3 weeks for 3 cycles. Concurrent chemoradiotherapy: Cisplatin 100mg/m2 in day 1, 22, and 43 during IMRT

70Gy to GTV, 60Gy to CTV1 and 54Gy to CTV2 in 32 to 33 fractions