Concurrent and Adjuvant PD1 Treatment Combined With Chemo-radiotherapy for High-risk Nasopharyngeal Carcinoma

"1. Camrelizumab: 200 mg, intravenous injection over 60 minutes (Q3W); 2 cycles of camrelizumab are concurrently used during radiotherapy and camrelizumab are maintained for 1 year after the end of radiotherapy.~2. Gemcitabine plus cisplatin induction chemotherapy: gemcitabine is injected intravenously at the dose of 1000 mg/m2 on the 1st and 8th day (within 30 minutes) for 3 cycles; cisplatin is injected intravenously at the dose of 80 mg/m2 on the 1st day, for 3 cycles. 1 cycles per 3 weeks.~3. Concurrent cisplatin chemotherapy: cisplatin is given at a dose of 100 mg/m2 via a continuous intravenous infusion during radiotherapy and starts on the 1st day of radiotherapy for 2 cycles. 1 cycles per 3 weeks.~4. IMRT: PTVnx#69.96Gy/33Fr/2.12Gy; PTVnd#69.96Gy/33Fr/2.12Gy; PTV1#59.4Gy/33Fr/1.8Gy; PTV2#54Gy/33Fr/1.64Gy"

"1. Gemcitabine plus cisplatin induction chemotherapy: gemcitabine is injected intravenously at the dose of 1000 mg/m2 on the 1st and 8th day (within 30 minutes) for 3 cycles; cisplatin is injected intravenously at the dose of 80 mg/m2 on the 1st day, for 3 cycles. 1 cycles per 3 weeks.~2. Concurrent cisplatin chemotherapy: cisplatin is given at a dose of 100 mg/m2 via a continuous intravenous infusion during radiotherapy and starts on the 1st day of radiotherapy for 2 cycles. 1 cycles per 3 weeks.~3. IMRT: PTVnx#69.96Gy/33Fr/2.12Gy; PTVnd#69.96Gy/33Fr/2.12Gy; PTV1#59.4Gy/33Fr/1.8Gy; PTV2#54Gy/33Fr/1.64Gy"