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High‐risk lymph node ratio predicts worse prognosis in patients with locally advanced oral cancer
Author(s) -
Zhao TongChao,
Liang SiYuan,
Ju WuTong,
Fu Yong,
Zhou ZhiHang,
Wang LiZhen,
Li Jiang,
Zhang ChenPing,
Zhang ZhiYuan,
Zhong LaiPing
Publication year - 2020
Publication title -
journal of oral pathology and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 83
eISSN - 1600-0714
pISSN - 0904-2512
DOI - 10.1111/jop.13043
Subject(s) - medicine , proportional hazards model , oncology , receiver operating characteristic , cutoff , docetaxel , risk factor , stage (stratigraphy) , lymph node , multivariate analysis , survival analysis , cancer , paleontology , physics , quantum mechanics , biology
Background To investigate the prognostic value of lymph node ratio (LNR), as well as the correlation with docetaxel, cisplatin, and 5‐FU (TPF) induction chemotherapy, in patients with locally advanced oral squamous cell carcinoma (OSCC). Methods Two‐hundred and forty‐five patients from a phase 3 trial involving TPF induction chemotherapy in stage III/IVA OSCC patients (NCT01542931) were enrolled in this study between 2008 and 2010. The clinical and pathological data were collected and analyzed. The cutoff value for LNR was calculated on the receiver operating characteristic (ROC) curve. Univariate and multivariate Cox regression models, and Kaplan‐Meier method were used for survival analysis. Results According to the ROC curve, the cutoff value for LNR was 7.6%. With a median follow‐up period of 80 months, the OSCC patients with high‐risk LNR (> 7.6%), or positive extranodal extension (ENE) had significantly worse clinical outcomes than patients with low‐risk LNR (≤7.6%) or negative ENE. Multivariate analysis on pathological covariates showed that only high‐risk LNR was an independent negative predictive factor for survival ( P < .05). The cutoff value of LNR of 7.6% was also verified with the similar results using an open TCGA database, high‐risk LNR indicating worse overall survival ( P < .001) and disease‐free survival ( P < .001). Conclusion Oral squamous cell carcinoma patients with high‐risk LNR have a worse clinical outcome than patients with low‐risk LNR. High‐risk LNR is an independent negative predictive factor for clinical outcome in patients with locally advanced OSCC.