Efficacy of Ulinastatin for Reducing Radiation-Induced Oral Mucositis in Nasopharyngeal Carcinoma Patients

"Patients in both arms received concurrent cisplatin chemotherapy:~100 mg/m² cisplatin given intravenously every 3 weeks on days 1, 22 concurrently with radiotherapy."

"Patients in both arms received Intensity Modulated Radiation Therapy:~All target volumes were outlined slice by slice on the axial contrast-enhanced CT with MR fusion images in the treatment planning system. The target volumes were defined in accordance with the International Commission on Radiation Units and Measurements Reports 50 and 62. The prescribed dose was 68-72 Gy to PTVnx (Planning target volume of the primary tumor), 64-68 Gy to GTVnd (Gross tumor volume of the cervical lymph node), 60- 64Gy to PTVnd and PTV1 (Planning target volume 1), and 54-58 Gy to PTV2 (Planning target volume 2) in 30-32 fractions. The details of dose limits for organs at risk were based on the study 0225 from The Radiation Therapy Oncology Group (RTOG 0225)."

"Patients in the experimental group were received ulinastatin:~Ulinastatin (UTI): ulinastatin was intravenous drip at a dose of one hundred thousand units added to 100 ml of 0.9% normal saline every time, 3 times every radiation day, and until the end of radiotherapy."