Reduced-dose Radiotherapy for Low-risk Stage III Patients With Nasopharyngeal Carcinoma

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To explore the 2 year PFS of patients with stage III nasopharyngeal carcinoma of pretreatment EBV DNA<4000 copy/ml treated with induction chemotherapy followed by reduced-dose radiation and cisplatin. The enrolled patients will receive 2 cycles of TPF regimen induction chemotherapy, if radiographic ...

To explore the 2 year PFS of patients with stage III nasopharyngeal carcinoma of pretreatment EBV DNA<4000 copy/ml treated with induction chemotherapy followed by reduced-dose radiation and cisplatin. The enrolled patients will receive 2 cycles of TPF regimen induction chemotherapy, if radiographic CR/PR and EBV DNA=0 after induction chemotherapy, the patients will be delivered by 60 Gy IMRT combined with 3 cycles of cisplatin concurrent chemotherapy. If radiographic SD/PD or EBV DNA>0 after induction chemotherapy, the patients will receive a total of 70 Gy IMRT combined with 3 cycles of cisplatin concurrent chemotherapy. The included patients will be treated with 2 cycles of TPF regimen induction chemotherapy and 60Gy IMRT combined with cisplatin concurrent chemotherapy. The TPF regimen is consist of paclitaxel liposome 135mg/m2 d1, cisplatin 25mg/m2d1-d3 and 5-Fu 3750mg/m2 civ120h, with a total of two cycles. Concurrent cisplatin chemotherapy is delivered with dose of 100mg/m2, a total of three cycles. The third cycle of cisplatin concurrent chemotherapy is allowed to be delivered within one week after IMRT finished.

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