Objectives: To analyze clinicopathological features and survival of surgically treated patients with renal cell carcinoma (RCC)≥80 years of age in comparison with patients between the ages of 60 and 70 years. Materials and methods: The data for 2,516 patients with a median follow-up of 57 months were retrieved from a multinational database (Collaborative Research on Renal Neoplasms Association [CORONA]), including data for 6,234 consecutive patients with RCC after radical or partial nephrectomy. Comparative analysis of clinicopathological features of 241 octogenarians (3.9% of the database) and 2,275 reference patients between the ages of 60 and 70 years (36.5%) was performed. Multivariable regression analysis adjusted for competing risks was applied to identify the effect of advanced age on cancer-specific mortality (CSM) and other-cause mortality (OCM). Furthermore, instrumental variable analysis was employed to reduce residual confounding by unmeasured parameters. Results: Significantly more women were present (50% vs. 40%, P = 0.004), and significantly less often nephron-sparing surgery was performed in octogenarians compared with the reference group (11% vs. 20%, P<0.001). Although median tumor size and stages did not significantly defer, older patients less often had advanced or metastatic disease (N+/M1) (4.6% vs. 9.6%, P = 0.009). On multivariable analysis, higher CSM (hazard ratio = 1.48, P = 0.042) and OCM rates (hazard ratio = 4.32, P<0.001) were detectable in octogenarians (c-indices = 0.85 and 0.72, respectively). Integration of the variable age group in multivariable models significantly increased the predictive accuracy regarding OCM (6%, P<0.001), but not for CSM. Limitations are based on the retrospective study design. Conclusions: Octogenarian patients with RCC significantly differ in clinical features and display significantly higher CSM and OCM rates in comparison with their younger counterparts.

Results of a comparative study analyzing octogenarians with renal cell carcinoma in a competing risk analysis with patients in the seventh decade of life / May, M.; Cindolo, L.; Zigeuner, R.; De Cobelli, O.; Rocco, B.; De Nunzio, C.; Tubaro, A.; Coman, I.; Truss, M.; Dalpiaz, O.; Wolff, I.; Feciche, B.; Fenske, F.; Pichler, M.; Schips, L.; Figenshau, R. S.; Madison, K.; Sanchez-Chapado, M.; Santiago Martin, M. D. C.; Salzano, L.; Lotrecchiano, G.; Waidelich, R.; Stief, C.; Sountoulides, P.; Brookman-May, S.. - In: UROLOGIC ONCOLOGY. - ISSN 1078-1439. - 32:8(2014), pp. 1252-1258. [10.1016/j.urolonc.2014.04.013]

Results of a comparative study analyzing octogenarians with renal cell carcinoma in a competing risk analysis with patients in the seventh decade of life

De Nunzio C.;Tubaro A.;
2014

Abstract

Objectives: To analyze clinicopathological features and survival of surgically treated patients with renal cell carcinoma (RCC)≥80 years of age in comparison with patients between the ages of 60 and 70 years. Materials and methods: The data for 2,516 patients with a median follow-up of 57 months were retrieved from a multinational database (Collaborative Research on Renal Neoplasms Association [CORONA]), including data for 6,234 consecutive patients with RCC after radical or partial nephrectomy. Comparative analysis of clinicopathological features of 241 octogenarians (3.9% of the database) and 2,275 reference patients between the ages of 60 and 70 years (36.5%) was performed. Multivariable regression analysis adjusted for competing risks was applied to identify the effect of advanced age on cancer-specific mortality (CSM) and other-cause mortality (OCM). Furthermore, instrumental variable analysis was employed to reduce residual confounding by unmeasured parameters. Results: Significantly more women were present (50% vs. 40%, P = 0.004), and significantly less often nephron-sparing surgery was performed in octogenarians compared with the reference group (11% vs. 20%, P<0.001). Although median tumor size and stages did not significantly defer, older patients less often had advanced or metastatic disease (N+/M1) (4.6% vs. 9.6%, P = 0.009). On multivariable analysis, higher CSM (hazard ratio = 1.48, P = 0.042) and OCM rates (hazard ratio = 4.32, P<0.001) were detectable in octogenarians (c-indices = 0.85 and 0.72, respectively). Integration of the variable age group in multivariable models significantly increased the predictive accuracy regarding OCM (6%, P<0.001), but not for CSM. Limitations are based on the retrospective study design. Conclusions: Octogenarian patients with RCC significantly differ in clinical features and display significantly higher CSM and OCM rates in comparison with their younger counterparts.
2014
cancer-specific mortality; competing risks regression analysis; instrumental variable; nephrectomy; octogenarians; renal cell carcinoma
01 Pubblicazione su rivista::01a Articolo in rivista
Results of a comparative study analyzing octogenarians with renal cell carcinoma in a competing risk analysis with patients in the seventh decade of life / May, M.; Cindolo, L.; Zigeuner, R.; De Cobelli, O.; Rocco, B.; De Nunzio, C.; Tubaro, A.; Coman, I.; Truss, M.; Dalpiaz, O.; Wolff, I.; Feciche, B.; Fenske, F.; Pichler, M.; Schips, L.; Figenshau, R. S.; Madison, K.; Sanchez-Chapado, M.; Santiago Martin, M. D. C.; Salzano, L.; Lotrecchiano, G.; Waidelich, R.; Stief, C.; Sountoulides, P.; Brookman-May, S.. - In: UROLOGIC ONCOLOGY. - ISSN 1078-1439. - 32:8(2014), pp. 1252-1258. [10.1016/j.urolonc.2014.04.013]
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