BACKGROUND: The ROSORC trial, a randomised, phase II trial comparing sorafenib plus interleukin (IL-2) versus sorafenib alone as first-line treatment of metastatic renal cell carcinoma (mRCC) failed to demonstrate differences in progression-free survival (PFS).
Updated overall survival (OS) results are reported.
PATIENTS AND METHODS: In this study, 128 patients were randomised to receive sorafenib 400 mg twice daily plus subcutaneous IL-2 4.5 million international units (MIU) five times per week for 6 weeks every 8 weeks (arm A) or sorafenib alone (arm B). OS was estimated with the Kaplan-Meier method and compared with the two-sided log-rank test.
RESULTS: After a median follow-up of 58 months (interquartile range: 28-63 months), the median OS was 38 and 33 months in arms A and B, respectively (P = 0.667). The 5-year OS was 26.3% [95% confidence interval (CI) 15.9-43.5) and 23.1% (95% CI 13.2-40.5) for the combination- and single-agent arm, respectively. Most of the patients who were refractory to first-line treatment were subsequently treated with different targeted agents; they had a median survival greater than expected.
CONCLUSIONS: This outcome suggests a synergistic effect of the subsequent therapies following sorafenib failure.
Written by:
Procopio G, Verzoni E, Bracarda S, Ricci S, Sacco C, Ridolfi L, Porta C, Miceli R, Zilembo N, Bajetta E. Are you the author?
Department of Medical Oncology, Unit 1, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan.
Reference: Ann Oncol. 2013 Sep 24. Epub ahead of print.
doi: 10.1093/annonc/mdt375
PubMed Abstract
PMID: 24063860
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