Effect of chemotherapy on survival in patients with stage T3-4N0M0 nasopharyngeal carcinoma.

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To identify whether chemoradiotherapy improves survival in patients with stage T3-4N0M0 nasopharyngeal carcinoma (NPC).The data of patients with stage T3-4N0M0 NPC were extracted from the Surveillance, Epidemiology, and End Results database between 2004 and 2016. The patients were divided into radiotherapy and chemoradiotherapy groups. Overall survival (OS) and cancer-specific survival (CSS) were assessed using the Kaplan-Meier method and propensity score matching (PSM) analyses.We examined 496 patients: 88 who received radiotherapy and 408 who received chemoradiotherapy. Before PSM, chemoradiotherapy was associated with a better 5-year OS (52.58% vs. 38.13%; P=0.005) and similar CSS (63.62% vs. 59.26%; P=0.196) compared to those associated with radiotherapy. However, chemoradiotherapy was not an independent prognostic factor for OS [hazard ratio (HR)=0.95, 95% confidence interval (CI): 0.68-1.32; P=0.760] or CSS (HR=1.02, 95% CI: 0.66-1.56; P=0.935). After PSM, similar OS (45.15% vs. 42.78%; P=0.626) and CSS (58.22% vs. 60.37%; P=0.730) were found between the radiotherapy and chemoradiotherapy groups.Radiotherapy and chemoradiotherapy are associated with similar OS and CSS in patients with stage T3-4N0M0 NPC.

View the full article @ Clinical otolaryngology : official journal of ENT-UK ; official journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery
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Authors: Xin-Bin Pan, Song Qu, Ling Li, Long Chen, Shi-Xiong Liang, Xiao-Dong Zhu