Prognostic value of nutritional impairment on treatment‐related toxicity and survival in patients with nasopharyngeal carcinoma taking normal nutrition before radiotherapy
Li Su, Qiaojing Lin, Rong Li, Yangjingling Hua, Hairong Zhang, Xiurong Song, Jinru Ye, Weijian Zhang, Jinsheng Hong
Abstract
BACKGROUND: To investigate nutritional impairment during intensity-modulated radiotherapy (IMRT) in patients with nasopharyngeal carcinoma (NPC) taking normal nutrition before IMRT and its effect on treatment-related toxicities (TRTs) and survival. METHODS: Modified nutrition index (m-NI) of 187 patients with NPC, comprised eight indicators (body mass index, circumference of upper arm muscles, total lymphocyte count, red blood cell count, levels of albumin, pre-albumin, transferrin, and hemoglobin), were evaluated before/after IMRT. Patient characteristics, m-NI, and the follow-up data for survival and TRTs were analyzed. RESULTS: The m-NI scores of patients with NPC decreased significantly after IMRT. Severe nutritional impairment (SNI; decrease in m-NI score ≥50%) was an independent prognostic factor for overall survival (OS) and an independent risk factor for grade ≥2 oral mucositis. Classification T4 disease and smoking were SNI risk factors. CONCLUSIONS: SNI during IMRT is a risk factor for oral mucositis and a prognostic factor for worse OS in patients with NPC.