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Nasopharyngeal carcinoma (NPC) is a highly metastatic cancer. The 2-year survival rate of patients with stage III or IV disease is only about 50%. Due to its high radiosensitivity, radiotherapy is the standard treatment for early-stage of NPC. However, the radioresistance observed in some patients can cause distant metastases and local recurrence after radiotherapy. Special emphasis has been given...
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