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Preoperative controlling nutritional status (CONUT) score as a novel immune-nutritional predictor of survival in non-metastatic clear cell renal cell carcinoma of ≤ 7 cm on preoperative imaging

  • Original Article – Clinical Oncology
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Abstract

Purpose

This study aimed at investigating the prognostic value of Preoperative controlling nutritional status (CONUT) score in non-metastatic clear-cell renal cell carcinoma of ≤ 7 cm on preoperative imaging.

Methods

We retrospectively included 1046 among 1637 patients who underwent radical or partial nephrectomy for solid renal masses ≤ 7 cm (2005–2014) after excluding other pathology, conditions affecting CONUT score components, metastasis, regional lymphadenopathy, positive margin, and follow-up < 12 months. We defined high and low CONUT according to cut-off of (2). Multivariate Cox-regression analysis was used to predict factors affecting recurrence and survival. Kaplan–Meier curve was used for survival analysis.

Results

The median age and follow-up were 56 years and 63 months, respectively. 41 patients had recurrence (3.9%). CONUT was a predictor for recurrence-free, cancer-specific, and overall survival (HR 3.09, P = 0.003 and HR 4.66, P = 0.004 and HR 2.81, P = 0.003, respectively). A higher CONUT was significantly associated with worse 5 years recurrence-free (88.2% vs. 97.1%), cancer-specific (96.2% vs. 98.8%) and overall (90.9% vs. 96.5%) survival (log-rank, P = < 0.001, P = 0.006 and P = < 0.001, respectively).

Conclusions

The preoperative CONUT is an independent prognostic marker for survival after curative surgery for non-metastatic clear-cell renal cell carcinoma of ≤ 7 cm on preoperative imaging.

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Acknowledgements

This research was supported by a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (grant number: HI17C1095).

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Correspondence to Won Sik Ham.

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Conflict of interest

No conflict exists.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was not required for the purposes of this study, as the study was based on retrospective anonymous patient data and did not involve patient intervention or the use of human tissue samples.

Additional information

Elghiaty A, Ham WS. Preoperative Controlling Nutritional Status (CONUT) Score as a Novel Immune-Nutritional Predictor of Survival Among Patients with Non-Metastatic Clear Cell Renal Cell Carcinoma of ≤ 7 cm on Preoperative Imaging [abstract]. In: Proceedings of the 38th annual congress of the Société Internationale d’Urologie; 2018 Oct 4–7; Seoul, South Korea.

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Elghiaty, A., Kim, J., Jang, W.S. et al. Preoperative controlling nutritional status (CONUT) score as a novel immune-nutritional predictor of survival in non-metastatic clear cell renal cell carcinoma of ≤ 7 cm on preoperative imaging. J Cancer Res Clin Oncol 145, 957–965 (2019). https://doi.org/10.1007/s00432-019-02846-x

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  • DOI: https://doi.org/10.1007/s00432-019-02846-x

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