Abstract
Background
Coagulation and inflammation play important roles in tumor progression. This study aimed to explore the prognostic impact of combined analysis of fibrinogen and neutrophil-to-lymphocyte (NLR) ratio (F-NLR score) in locally advanced rectal cancer (LARC) receiving preoperative chemoradiotherapy (pCRT) and radical surgery.
Method
Totally 317 patients were included. X-tile analysis was used to determine the optimal cutoff values of preoperative fibrinogen and NLR. F-NLR scores were defined as 2 (both high fibrinogen and NLR), 1 (one of these abnormalities), or 0 (neither abnormality). Time-dependent ROC analysis was used to evaluate the predictive accuracy of fibrinogen, NLR, and F-NLR score. Cox regression analysis was performed to evaluate the prognostic impact of the F-NLR score. A predictive nomogram for disease-free survival (DFS) was developed and validated internally.
Results
One hundred and seventeen (36.9%), 156 (49.2%), and 44 (13.9%) patients had F-NLR score of 0, 1, and 2, respectively. Higher F-NLR score was associated with poorly differentiated tumors, deeper tumor invasion, lymph node metastasis, and more advanced pTNM stage (all P < 0.05). The 5-year OS rates in the F-NLR 0, 1, and 2 groups were 93.6%, 87.3%, and 68.4%, respectively (P < 0.001), while the 5-year DFS rates were 91.8%, 76.8%, and 56.1%, respectively (P < 0.001). Cox regression analysis demonstrated that F-NLR score (F-NLR 1, HR = 2.021, P = 0.046; F-NLR 2, HR = 3.356, P = 0.002), pTNM stage III (HR = 3.109, P = 0.009), and circumferential resection margin (CRM) involvement (HR = 3.120, P = 0.021) were independently associated with DFS. A nomogram for DFS was developed (C-index 0.708).
Conclusion
F-NLR score is a promising predictor for disease recurrence in LARC patients after pCRT.
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Acknowledgements
The authors thank all the staff in the Department of colorectal surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, People’s Republic of China.
Funding
This study was supported by Construction Project of Fujian Province Minimally Invasive Medical Center (Grant Number: [2017]171), Startup Fund for Scientific Research, Fujian Medical University (Grant Number: 2017XQ1028), Joint Funds for the Innovation of Science and Technology, Fujian province (Grant Number: 2018Y9030), and Young and Middle-aged Backbone Training Project in the Health System of Fujian province (Grant Number: 2019-ZQN-45).
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Sun, Y., Zhang, Y., Huang, Z. et al. Combination of Preoperative Plasma Fibrinogen and Neutrophil-to-Lymphocyte Ratio (the F-NLR Score) as a Prognostic Marker of Locally Advanced Rectal Cancer Following Preoperative Chemoradiotherapy. World J Surg 44, 1975–1984 (2020). https://doi.org/10.1007/s00268-020-05407-3
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DOI: https://doi.org/10.1007/s00268-020-05407-3