JOURNAL ARTICLE
MULTICENTER STUDY

Pazopanib as second-line treatment after sunitinib or bevacizumab in patients with advanced renal cell carcinoma: a Sarah Cannon Oncology Research Consortium Phase II Trial

John D Hainsworth, Mark S Rubin, Edward R Arrowsmith, James Khatcheressian, Edward J Crane, Luis A Franco
Clinical Genitourinary Cancer 2013, 11 (3): 270-5
23665131

BACKGROUND: This phase II trial examined the activity and toxicity of second-line treatment with pazopanib after failure of first-line single-agent treatment with sunitinib or bevacizumab in patients with advanced clear cell renal carcinoma.

PATIENTS AND METHODS: Fifty-five patients with metastatic clear cell renal carcinoma who had previously received first-line treatment with sunitinib (39 patients) or bevacizumab (16 patients) were enrolled. Patients received pazopanib 800 mg orally daily and were evaluated for response after 8 weeks of treatment. Responses were measured using Response Evaluation Criteria in Solid Tumors (RECIST), version 1.0, and confirmed with repeated scans after 8 weeks. Patients with objective response or stable disease continued treatment until disease progression or unacceptable toxicity occurred.

RESULTS: Fifteen of 55 patients (27%) had objective response to pazopanib. An additional 27 patients (49%) had stable disease, for a disease control rate of 76%. After a median follow-up of 16.7 months, the median progression-free survival for the entire group was 7.5 months (95% confidence interval, 5.4-9.4 months). Similar progression-free survival was observed regardless of whether previous treatment was with sunitinib or bevacizumab. The estimated overall survival rate for the entire group at 24 months was 43%.

CONCLUSION: Pazopanib is an active agent for the treatment of advanced clear cell renal carcinoma, even after failure of sunitinib or bevacizumab. Treatment with pazopanib should be considered early in the sequence of therapy for patients with advanced renal cell carcinoma.

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