BACKGROUND: The current study was conducted to investigate the dependence between progression-free survival (PFS) and overall survival (OS) in patients with metastatic renal cell carcinoma (mRCC) and to explore whether PFS can be used as an intermediate endpoint of OS in this patient population. METHODS: A total of 1381 patients from 2 prospective phase 3 trials (Cancer and Leukemia Group B [CALGB] 90206 and AVOREN) ofinterferon-alpha with or without bevacizumab were analyzed. Both trials recruited previously untreated patients with clear cell mRCC with an Eastern Cooperative Oncology Group performance status of 0 to 2; adequate bone marrow, hepatic, cardiac, and renal function; and controlled blood pressure. The CALGB study served as the training data set, and the AVOREN study served as the testing data set. The dependence between PFS and OS was investigated using the Kendall tau for bivariate time-to-event endpoints. RESULTS: In the training data set, the median OS times among patients who experienced progressive disease at 3 months or 6 months were 6 months and 8 months, respectively, compared with 25 months and 30 months, respectively, (P < .001) in patients who did not develop disease progress. The adjusted hazard ratios (HR) were 2.6 (P < .0001) and 2.8 (P < .0001), respectively, for patients who did and did not progress at 3 months or 6 months. The dependence between PFS and OS was 0.53. These associations were confirmed in the testing data set. CONCLUSIONS: In patients with mRCC who were treated with interferon-alpha with or without bevacizumab, the PFS at 3 months and 6 months was found to be predictive of OS. A high dependence between PFS and OS was observed, suggesting that PFS may be used as a surrogate endpoint for OS. Although this is a novel observation for RCC, these findings require validation in patients with mRCC who are treated with other targeted agents.
RCT Entities:
BACKGROUND: The current study was conducted to investigate the dependence between progression-free survival (PFS) and overall survival (OS) in patients with metastatic renal cell carcinoma (mRCC) and to explore whether PFS can be used as an intermediate endpoint of OS in this patient population. METHODS: A total of 1381 patients from 2 prospective phase 3 trials (Cancer and Leukemia Group B [CALGB] 90206 and AVOREN) of interferon-alpha with or without bevacizumab were analyzed. Both trials recruited previously untreated patients with clear cell mRCC with an Eastern Cooperative Oncology Group performance status of 0 to 2; adequate bone marrow, hepatic, cardiac, and renal function; and controlled blood pressure. The CALGB study served as the training data set, and the AVOREN study served as the testing data set. The dependence between PFS and OS was investigated using the Kendall tau for bivariate time-to-event endpoints. RESULTS: In the training data set, the median OS times among patients who experienced progressive disease at 3 months or 6 months were 6 months and 8 months, respectively, compared with 25 months and 30 months, respectively, (P < .001) in patients who did not develop disease progress. The adjusted hazard ratios (HR) were 2.6 (P < .0001) and 2.8 (P < .0001), respectively, for patients who did and did not progress at 3 months or 6 months. The dependence between PFS and OS was 0.53. These associations were confirmed in the testing data set. CONCLUSIONS: In patients with mRCC who were treated with interferon-alpha with or without bevacizumab, the PFS at 3 months and 6 months was found to be predictive of OS. A high dependence between PFS and OS was observed, suggesting that PFS may be used as a surrogate endpoint for OS. Although this is a novel observation for RCC, these findings require validation in patients with mRCC who are treated with other targeted agents.
Authors: Kent R Johnson; Clare Ringland; Barrie J Stokes; Danielle M Anthony; Nick Freemantle; Alar Irs; Suzanne R Hill; Robyn L Ward Journal: Lancet Oncol Date: 2006-09 Impact factor: 41.316
Authors: Bernard Escudier; Tim Eisen; Walter M Stadler; Cezary Szczylik; Stéphane Oudard; Michael Siebels; Sylvie Negrier; Christine Chevreau; Ewa Solska; Apurva A Desai; Frédéric Rolland; Tomasz Demkow; Thomas E Hutson; Martin Gore; Scott Freeman; Brian Schwartz; Minghua Shan; Ronit Simantov; Ronald M Bukowski Journal: N Engl J Med Date: 2007-01-11 Impact factor: 91.245
Authors: Robert J Motzer; Thomas E Hutson; Piotr Tomczak; M Dror Michaelson; Ronald M Bukowski; Olivier Rixe; Stéphane Oudard; Sylvie Negrier; Cezary Szczylik; Sindy T Kim; Isan Chen; Paul W Bycott; Charles M Baum; Robert A Figlin Journal: N Engl J Med Date: 2007-01-11 Impact factor: 91.245
Authors: Brian I Rini; Susan Halabi; Jonathan E Rosenberg; Walter M Stadler; Daniel A Vaena; Laura Archer; James N Atkins; Joel Picus; Piotr Czaykowski; Janice Dutcher; Eric J Small Journal: J Clin Oncol Date: 2010-04-05 Impact factor: 44.544
Authors: Daniel Y C Heng; Wanling Xie; Georg A Bjarnason; Ulka Vaishampayan; Min-Han Tan; Jennifer Knox; Frede Donskov; Lori Wood; Christian Kollmannsberger; Brian I Rini; Toni K Choueiri Journal: Cancer Date: 2010-11-18 Impact factor: 6.860
Authors: Gary Hudes; Michael Carducci; Piotr Tomczak; Janice Dutcher; Robert Figlin; Anil Kapoor; Elzbieta Staroslawska; Jeffrey Sosman; David McDermott; István Bodrogi; Zoran Kovacevic; Vladimir Lesovoy; Ingo G H Schmidt-Wolf; Olga Barbarash; Erhan Gokmen; Timothy O'Toole; Stephanie Lustgarten; Laurence Moore; Robert J Motzer Journal: N Engl J Med Date: 2007-05-31 Impact factor: 91.245
Authors: Manish R Sharma; Elizabeth Gray; Richard M Goldberg; Daniel J Sargent; Theodore G Karrison Journal: J Clin Oncol Date: 2014-10-27 Impact factor: 44.544