Abstract
Purpose
Methods to preoperatively stratify oncological risks associated with gastric cancer (GC) are limited. Host inflammatory parameters, i.e., serum C-reactive protein (CRP) and albumin levels, are known to be associated with outcomes. We examined the relationships between disease-specific mortality and four CRP-albumin–based indices (CRP-albumin ratio [CAR], modified Glasgow prognostic score [mGPS], Osaka prognostic score [OPS], and NUn score) preoperatively measured in cases with resectable GC.
Methods
Survival outcomes of 1290 consecutive GC patients with oncological gastrectomy were reviewed. Predictive significances of preoperative CAR, mGPS, OPS, and NUn scores were assessed with time-dependent receiver operating characteristic curves and Cox regression analyses.
Results
Median follow-up was 107 months. Area under the curve for predicting overall and disease-specific survivals (OS/DSS) for the preoperative NUn score was clearly superior to those of the other parameters. On univariate Cox regression analysis, preoperative CAR, mGPS, OPS, and the NUn score all correlated significantly with OS/DSS. On multivariate Cox regression analysis, the preoperative NUn score, as a continuous variable, showed an independent relationship with OS (hazard ratio [HR] 1.32, 95% confidence interval [CI] 1.16–1.50, per 1-unit increase, P < 0.001) and even DSS (HR 1.23, 95% CI 1.02–1.49, P = 0.032). The other three markers failed to maintain independence for DSS.
Conclusions
Preoperative NUn scores are stably associated with outcomes, including disease-specific mortality, possibly serving as a simple measure to define the likelihood of progression to systemic disease after meticulous surgery for GC, which may contribute to identifying patients who would benefit from additional modalities.
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Data availability
The present data are not available for other studies.
Abbreviations
- CAR:
-
C-reactive protein to albumin ratio
- CRP:
-
C-reactive protein
- DSS:
-
Disease-specific survival
- GC:
-
Gastric cancer
- mGPS:
-
Modified Glasgow prognostic score
- NLR:
-
Neutrophil-to-lymphocyte ratio
- OPS:
-
Osaka prognostic score
- OS:
-
Overall survival
- PLR:
-
Platelet-to-lymphocyte ratio
- ROC:
-
Receiver operating characteristic
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Acknowledgements
We thank Shotaro Aso, MD, MPH, PhD (Department of Real World Evidence, Graduate School of Medicine, The University of Tokyo) for his helpful assistance with the statistical analyses.
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Study conception and design: M. Urabe. Acquisition of data: all authors. Analysis and interpretation of data: M. Urabe and Y. Okumura. Drafting of manuscript: all authors. Critical revision: K. Yagi, H. Yamashita, and Y. Seto.
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Urabe, M., Okumura, Y., Okamoto, A. et al. Preoperative NUn score serves as a robust predictor of overall and disease-specific survivals following radical surgery for gastric cancer. Langenbecks Arch Surg 409, 126 (2024). https://doi.org/10.1007/s00423-024-03317-9
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DOI: https://doi.org/10.1007/s00423-024-03317-9