Abstract
Background
Pretherapy serum neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), and lymphocyte to monocyte ratio (LMR) have been shown to predict prognosis in patients with pancreatic ductal adenocarcinoma (PDAC). However, the published literature is conflicting; hence, we aimed to evaluate their role in predicting survival outcomes in operated patients of PDAC.
Methods
A retrospective analysis was performed in all operated cases of PDAC who underwent curative resection between 2011 and 2018. The pretherapy NLR, PLR, and LMR were calculated and analyzed with respect to pathological and survival outcomes
Results
One hundred thirty-four operated patients were included. The median overall survival for NLR of less than 2, 2.7, and 5 was 30.8, 27.2, and 27.5 months and for NLR of more than 2, 2.7, and 5 was 22.9, 21.6, and 21.5 months, respectively, and was statistically insignificant (p-value—0.32, 0.91, 0.34, respectively). Similarly, the PLR was not significant for a cutoff of 150 (p-value—0.27), and LMR was not significant for a cutoff of 2.8 (p-value—0.13) and 4.8 (p-value—0.11). On univariate analysis age, CA 19–9 levels, perineural invasion, margin positivity, lymph node positivity, and TNM stage were found to have a significant correlation with overall survival. However, on multivariate analysis, only TNM stage was found to be significant.
Conclusion
The NLR, PLR, and LMR do not correlate with overall survival in operated patients with PDAC in this study. A combination of inflammatory markers or their dynamic testing might probably achieve prognostic significance.
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VG, MB VC, and SS were involved in the conception and design of the work. VG and MB are involved in acquisition, analysis, interpretation of data, and manuscript preparation. MB, VC, and SS are involved in manuscript editing, manuscript review. All authors read and approved the manuscript.
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The data of the present study were collected in the course of common clinical practice, and accordingly, the signed informed consent was obtained from each patient for any surgical and clinical procedure. The study protocol was in accordance with the ethical standards of the institutional research committee and the 1964 Helsinki Declaration and its later amendments. Because this was a retrospective study, formal consent for this study is not required, and no approval of the institutional research committee was needed.
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Gupta, V., Chaudhari, V., Shrikhande, S.V. et al. Does Preoperative Serum Neutrophil to Lymphocyte Ratio (NLR), Platelet to Lymphocyte Ratio (PLR), and Lymphocyte to Monocyte Ratio (LMR) Predict Prognosis Following Radical Surgery for Pancreatic Adenocarcinomas? Results of a Retrospective Study. J Gastrointest Canc 53, 641–648 (2022). https://doi.org/10.1007/s12029-021-00683-1
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DOI: https://doi.org/10.1007/s12029-021-00683-1