Sequential therapies with sorafenib and sunitinib in advanced or metastatic renal cell carcinoma

E Herrmann, N Marschner, M O Grimm, C H Ohlmann, U Hutzschenreuter, F Overkamp, M Groschek, K Blumenstengel, G Pühse, T Steiner
World Journal of Urology 2011, 29 (3): 361-6

PURPOSE: To investigate whether patients with metastatic renal cell carcinoma benefit from sequential therapies with the tyrosine kinase inhibitors (TKIs) sorafenib and sunitinib.

PATIENTS AND METHODS: A total of 89 patients were treated in nine German centres between 2002 and 2009. The TKI sequence started as first-, second- or third-line therapy after prior chemo- or immunotherapy. When progression was diagnosed, treatment was switched to the second TKI until further progression.

RESULTS: Overall progression-free survival (PFS) of patients receiving sunitinib followed by sorafenib shows no statistically significant difference to patients receiving sorafenib followed by sunitinib (15.4 months vs. 12.1 months). The secondary use of sorafenib resulted in a median PFS of 3.8 months if the TKI sequence had been started as a first-line treatment and of 3.5 months if the TKI sequence had been started second-line treatment. The secondary use of sunitinib resulted in a median PFS of 3.4 and 4.0 months, respectively. OS was 28.8 months for all patients, without a statistically significant difference between the two groups.

CONCLUSIONS: This study endorses the notion of a clinical benefit of the sequential use of sorafenib and sunitinib and supports observations from previous studies. In terms of the optimal succession of the two TKIs, the study does not allow a definite answer.

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