• Michela de Martino, Allan J Pantuck, Sebastian Hofbauer, Matthias Waldert, Shahrokh F Shariat, Arie S Belldegrun, and Tobias Klatte.
• Department of Urology, Medical University of Vienna, Vienna, Austria; Department of Urology, University of California-Los Angeles (AJP, ASB), Los Angeles, California.
• J. Urol. 2013 Dec 1;190(6):1999-2004.

PurposeThe preoperative neutrophil-to-lymphocyte ratio was proposed as a prognostic factor for localized clear cell renal cell carcinoma. We evaluated its role in nonclear cell renal cell carcinoma.Materials And MethodsWe queried 2 prospective kidney cancer databases. Patients who underwent full resection of localized (T1-3 N0/+ M0) nonclear cell renal cell carcinoma by radical or partial nephrectomy were included in analysis. Associations of the continuously coded neutrophil-to-lymphocyte ratio with disease-free survival were assessed with univariable and multivariable Cox regression models. Prognostic accuracy was evaluated with the Harrell concordance index.ResultsOur final cohort included 281 patients. The 5-year disease-free survival rate was 88.1%. The neutrophil-to-lymphocyte ratio was significantly associated with disease-free survival. With each 1.0 increase in the ratio the risk of recurrence increased by 15% (HR 1.15, p=0.028). On multivariable analysis TNM group (HR 2.84, p=0.025), Fuhrman grade (HR 3.40, p<0.001) and the neutrophil-to-lymphocyte ratio (HR 1.17, p=0.022) were independently associated with disease-free survival. Adding the neutrophil-to-lymphocyte ratio improved the accuracy of a base model to predict disease-free survival from 78.8% to 80.8%.ConclusionsThe neutrophil-to-lymphocyte ratio is an independent prognostic factor for disease-free survival after surgery with curative intent for localized nonclear cell renal cell carcinoma. It significantly increases the accuracy of established prognostic factors. The neutrophil-to-lymphocyte ratio may provide a meaningful adjunct for patient counseling and clinical trial design.Copyright © 2013 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.

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