Do Pathological Parameters Of Primary Tumor Correlate With Overall Survival (Os) Of Metastatic Clear-Cell Renal Cell Carcinoma (Ccrcc)?

549 Background: T and N stage, Fuhrman grade, necrosis and sarcomatoid features in the primary tumor are key prognostic factors for relapse of ccRCC, but they are not part of Hengu0027s algorithm applied to predict OS in the metastatic setting, which instead is based on 6 clinical/laboratory items. Methods: Retrospective analysis on correlation between pathological parameters and OS (from start of first-line targeted therapy) and Hengu0027s prognostic factors in a multicenter cohort of pts with advanced ccRCC, all of whom had undergone surgery on the kidney. Results: From 2006 to 2012, data of 903 eligible metastatic pts were collected from 33 Italian Oncology Institutions, median age 66 years, 72.6% males, 36.4 metastatic at diagnosis. After a median observation of 42 mo, 70,5% of pts died, estimated OS is 28.5 mo. Heng good prognosis pts were 14.45%, intermediate 69.1% and poor 16.45%. Univariate analysis showed that all pathological parameters significantly correlated with OS: T stage 3-4 vs 1-2 (HR 1.3), N1 v...