Abstract
Purpose
Our aim was to evaluate the prognostic implications of a preoperative novel index, systemic immune inflammation index (SII) in patients undergoing surgery due to renal cell carcinoma.
Methods
A retrospective analysis of 176 patients who underwent radical nephrectomy and diagnosed with RCC was carried out. Systemic immune inflammation index, which is calculated by neutrophil x platelet/lymphocyte, and other inflammation indexes such as neutrophil/lymphocyte ratio, platelet/lymphocyte were included. The Kaplan–Meier analysis was plotted, and the groups were compared using a log-rank test. The ROC curve for the aforementioned inflammation indexes was plotted.
Results
SII (× 109/l) for lower and higher T stage group were 743.70 ± 587.55 and 907.06 ± 631.96, respectively, which is statistically significant (p = 0.01). Patients with higher Fuhrman grade (G3 and G4) were found to have higher SII (p = 0.001). SII 830 was demonstrated as the best cut-off value for overall survival. The optimal cut-off point for SII was defined as 850 for disease-specific survival. High SII scores were associated with poor overall survival in RCC patients (p = 0.034). However, no significant association was found for disease-specific survival (p = 0.29).
Conclusions
Systemic immune inflammation index was found to be associated with increased TNM stage and poor prognosis of RCC patients udergoing radical nephrectomy.
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Data availability
All datasets used and analysed during the current study are available from the corresponding author on reasonable request.
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No research support or funding was received in connection with this study. The authors have no significant affiliation or involvement, either direct or indirect, with any organization or entity with a direct financial interest in the subject matter or materials discussed.
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EO, HB, and KO were involved in the design of the study. MOH, SNG, and KO performed data acquisition. HB, and EO were involved in the statistical analysis and interpretation of data. HB, KO, and MOH wrote the draft manuscript. EO and SNG helped with the manuscript editing. All authors read and approved the final manuscript.
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Ozbek, E., Besiroglu, H., Ozer, K. et al. Systemic immune inflammation index is a promising non-invasive marker for the prognosis of the patients with localized renal cell carcinoma. Int Urol Nephrol 52, 1455–1463 (2020). https://doi.org/10.1007/s11255-020-02440-y
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DOI: https://doi.org/10.1007/s11255-020-02440-y