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This article reviews the potential of sequential therapy in renal cell carcinoma (RCC), highlighting the unique biological profiles of targeted agents and their clinical efficacy. By using a variety of antiangiogenic agents sequentially, patients can benefit from subsequent therapies without overlapping toxicities, ultimately improving both the quality and duration of life. The review discusses ongoing trials, potential biomarkers, and the rationale for sequential therapy, emphasizing that current evidence suggests negligible cross-resistance between tyrosine kinase inhibitors (TKIs) and effective treatment outcomes.
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Sequential Therapy in Renal Cell Carcinoma J C Nunes Marques Serviço de Oncologia Médica Centro Hospitalar de Lisboa Ocidental
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Ongoing Phase III Trial: Pazopanib vs Sunitinib in the first-line treatment of patients with mRCC (COMPARZ) US National Institutes of Health Web Site http://www.clinicaltrials.gov/ct2/show/NCT00720941 acessed26oct2011
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Rational of sequential therapy • each targeted agent possesses a unique biologic profile • patients have benefited from subsequent therapy with a different antiangiogenic agent • full dose of each drug can be delivered without overlapping toxicities • additional PFS benefit can been achieved • the aim of therapy is to maximize the overall benefit to patient in terms of both quality and duration of life Sablin MP, et al. J Clin Oncol. 2007;25 (18S): Abstract 5038 Dham A, et al. J Clin Oncol. 2007;25(18S):Abstract 5106 Drabkin HÁ, et al. J Clin Oncol.2007;25(18S):Abstract 5041
Summary • Thesequentialapproachwithtargetedagentshaverevealedclinicalefficacy • Data suggeststhatthereisonlynegligibilecross-resistancebetweenTKIs • Inclinicalstudiesofsequentialtherapy, everolimuswaseffectiveaftertreatmentwithoneortwoTKIs • Inclinicalstudiesofsequentialtherapy, sequentialtreatmentwastolerableandtoxicitywaspredictable