Abstract
Purpose
Because the prognostic impact of the clinical and pathological features on cancer-specific survival (CSS) and overall survival (OS) in patients with papillary renal cell carcinoma (papRCC) is still controversial, we want to assess the impact of clinicopathological features, including Fuhrman grade and age, on survival in surgically treated papRCC patients in a large multi-institutional series.
Methods
We established a comprehensive multi-institutional database of surgically treated papRCC patients. Histopathological data collected from 2189 patients with papRCC after radical nephrectomy or nephron-sparing surgery were pooled from 18 centres in Europe and North America. OS and CSS probabilities were estimated using the Kaplan–Meier method. Multivariable competing risks analyses were used to assess the impact of Fuhrman grade (FG1-FG4) and age groups (<50 years, 50–75 years, >75 years) on cancer-specific mortality (CSM).
Results
CSS and OS rates for patients were 89 and 81% at 3 years, 86 and 75% at 5 years and 78 and 41% at 10 years after surgery, respectively. CSM differed significantly between FG 3 (hazard ratio [HR] 4.22, 95% confidence interval [CI] 2.17–8.22; p < 0.001) and FG 4 (HR 8.93, 95% CI 4.25–18.79; p < 0.001) in comparison to FG 1. CSM was significantly worse in patients aged >75 (HR 2.85, 95% CI 2.06–3.95; p < 0.001) compared to <50 years.
Conclusions
FG is a strong prognostic factor for CSS in papRCC patients. In addition, patients older than 75 have worse CSM than patients younger than 50 years. These findings should be considered for clinical decision making.
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Acknowledgements
The authors wish to thank all participants and collaborators of this study for their efforts in thoroughly documenting the data of patients with papillary renal cell carcinoma. We would also like to thank the following colleagues and acknowledge their support of this study: Markus Hohenfellner, Bernd Hoschke, and Raphaela Waidelich.
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HB data collection or management, data analysis, protocol/project development, manuscript writing/editing. MM protocol/project development, data collection or management, data analysis, Manuscript writing/editing. AH, AV, SFS, AS, MAJ-R, UC, PD, LMK, EH, TE, DV, NH, SP, SZ, MW, CS, CM, KP, GH, MH, CGS data collection or management, manuscript writing/editing. TK, IW, NW, RZ, LC data collection or management, data analysis, manuscript writing/editing. MM, SDB-M protocol/project development, data analysis, manuscript writing/editing.
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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. For this type of study formal consent is not required.
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Borgmann, H., Musquera, M., Haferkamp, A. et al. Prognostic significance of Fuhrman grade and age for cancer-specific and overall survival in patients with papillary renal cell carcinoma: results of an international multi-institutional study on 2189 patients. World J Urol 35, 1891–1897 (2017). https://doi.org/10.1007/s00345-017-2078-5
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DOI: https://doi.org/10.1007/s00345-017-2078-5