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- W2591496698 abstract "431 Background: In recent years, TTs have improved the prognosis of mRCC patients (pts). Despite a non-negligible number of pts received 3 TTs in clinical practice, no TTs have been evaluated as third-line. Aim of this study is to investigate the clinical outcome in pts who received 3 TTs. Methods: Pts with clear-cell mRCC who received 3 TTs were included. A questionnaire was sent to main Italian centers involved in the treatment of mRCC. Demographic data, history of RCC, type and length of first-, second- and third-line were collected; MSKCC risk class was calculated before starting the first-line. Sequences were evaluated by class (TKI-TKI-mTOR vs. TKI-mTOR-TKI) or by drug (Su-So-Ev vs. Su-Ev-So). Median PFS, OS and Time to Strategy Failure (TTSF: from start of first- to end of thrid-line) were estimated with the Kaplan-Meyer method with 95% CI and curves were compared with log-rank test. Cox model was used to explore predictors of TTSF and OS. The study had the ethical approval. Results: 2,065 pts were screened and 281 pts (13%) were treated with 3 TTs. No differences were found between TKI-TKI-mTOR and TKI-mTOR-TKI groups. The TTSF was 36.5 (30.5–42.6) mos vs. 29.3 (23.6–34.9) mos (p=0.059), and the OS was 50.7 (40.6–60.8) vs. 37.8 (34.2–41.5) mos (p=0.004), for TKI-TKI-mTOR and and TKI-mTOR-TKI, respectively. TTSF for Su-So-Ev was 32.1 vs. 30.4 mos for Su-Ev-So (p=0.006). The median OS was not reached in the group treated with Su-So-Ev compared to 35.6 (95%CI, 31.6–39.6) mos in the group treated with Su-Ev-So (p<0.001). The univariate and multivariable Cox analyses for TTSF and OS showed that the only predictive factor is the primary resistance to 1st line (HR: 3.15, 95%CI, 1.98-4.99; p<0.001). The Prognostic factors are the initial MSKCC group (HR: 2.07, 95% CI, 1.41 -3.05; p<0.001), the sequence of therapy (HR: 2.59, 95% CI, 1.59-4.22; p<0.001) and the primary resistance to first line (HR: 2.20, 95% CI, 1.16-4.11; p<0.001). Conclusions: We report as the sequential treatment with two antiangiogenic inhibitors followed by an mTOR inhibitor could increase survival and the control disease in metastatic renal cell carcinoma." @default.
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- W2591496698 date "2013-02-20" @default.
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- W2591496698 title "Progression-free survival (PFS) and overall survival (OS) in patients receiving three targeted therapies (TTs) for metastatic renal cell carcinoma (mRCC)." @default.
- W2591496698 doi "https://doi.org/10.1200/jco.2013.31.6_suppl.431" @default.
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