Abstract
Because inflammation plays a critical role in nasopharyngeal carcinoma (NPC), this study aims to investigate the correlation between the pro-inflammation cytokine interleukin-6 (IL6) and the prognosis of NPC and develop a new prognostic model. IL6 levels were measured in the serum of 290 NPC patients by ELISA and the correlation between IL6 and prognosis of NPC was evaluated by Kaplan–Meier analysis and multivariate analysis. The results showed that elevated IL6 levels were positively correlated with poorer 9-year overall survival (OS), disease-free survival (DFS), distant metastasis-free survival (DMFS) and lung metastasis-free survival (lung-MFS). IL6 level was an independent prognostic factor for OS, DFS, DMFS and lung-MFS. The CI-model based on TNM stage and IL6 level could better predict the OS, DFS, DMFS and lung-MFS of NPC patients. Here, the newly developed prognostic CI-model for predicting distant metastasis and death of NPC patients could facilitate patients consulting and individualized immunotherapy.
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