China Journal of Oral and Maxillofacial Surgery ›› 2023, Vol. 21 ›› Issue (6): 559-565.doi: 10.19438/j.cjoms.2023.06.005

• Original Articles • Previous Articles     Next Articles

Correlation between BMI and prognosis and induction chemotherapy in patients with locally advanced oral squamous cell carcinoma

ZHAO Tong-chao, LIANG Si-yuan, ZHOU Zhi-hang, ZHU Fang-xing, JU Wu-tong, TAN Yi-ran, LIU Ying, ZHONG Lai-ping   

  1. Department of Oromaxillofacial Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology. Shanghai 200011, China
  • Received:2022-11-05 Revised:2023-01-20 Online:2023-11-20 Published:2023-12-07

Abstract: PURPOSE: To evaluate the relationship between body mass index (BMI) and long-term prognosis and TPF induction chemotherapy in patients with locally advanced oral squamous cell carcinoma(OSCC). METHODS: This retrospective study included 10-year follow-up data from 253 patients with locally advanced OSCC in a previous phase Ⅲ clinical trial. Univariate and multivariate Cox regression models and Kaplan-Meier methods were used for survival analysis with SPSS 23.0 software package. RESULTS: The baseline BMI of 253 patients ranged from 13.16 to 34.66 kg/m2. The BMI of patients was highly correlated with smoking status(P<0.001). There was a marked correlation with clinical nodal stage(cN), patients with higher BMIs often having an earlier cN stage(P<0.05). Kaplan-Meier analysis showed that BMI was significantly correlated with overall survival (OS, P=0.014), disease-free survival (DFS, P=0.009), locoregional recurrence-free survival (LRFS, P=0.013), and distant metastasis-free survival(DMFS, P=0.015). Multivariate Cox regression analysis found that BMI was an independent prognostic factor for OS(P=0.015), DFS(P=0.010), LRFS (P=0.015), and DMFS (P=0.016). Correlation analysis of BMI with efficacy of induction chemotherapy found that only patients with normal BMI and clinical stage Ⅳa OSCC who received TPF-induced chemotherapy had better OS(HR: 0.425, 95%CI: 0.187-0.966, P=0.041) and DMFS(HR: 0.425, 95%CI: 0.187-0.966, P=0.041). CONCLUSIONS: BMI at baseline is an independent predictor of prognosis in patients with locally advanced OSCC. Underweight patients may have a worse clinical prognosis than those who are normal weight, while those who have overweighted and obese have a better prognosis. A normal BMI in clinical stage Ⅳa OSCC patients predicts significant OS and DMFS benefits of TPF induction chemotherapy.

Key words: Body mass index, Oral squamous cell carcinoma, TPF induction chemotherapy, Prognosis

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