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Abstract
Background: The approval of sunitinib, sorafenib and temsirolimus has dramatically altered the management of renal cell carcinoma (RCC). Bevacizumab plus IFN may also be added to the therapeutic armamentarium. Axitinib (AG-013736) is an oral and selective tyrosine kinase inhibitor. Objective: Data supporting the development of axitinib for RCC are reviewed. Methods: Preclinical and clinical data available for axitinib for RCC are presented. Results: Axitinib inhibits VEGFR-1, VEGFR-2 and VEGFR-3 with picomolar potencies, and PDGFR-α, PDGFR-β and c-kit with nanomolar potencies. Phase II clinical trials of axitinib in pretreated RCC following sorafenib or cytokine treatment have demonstrated promising activity accompanied by a favorable toxicity profile. Further development of axitinib for RCC is warranted.