Meta-analysis of randomized clinical trials (RCT) for the adjuvant treatment of renal cell carcinoma (RCC) with vascular endothelial growth factor receptor tyrosine-kinase inhibitors (VEGFR TKIs).

Authors

Daniel Vargas Pivato de Almeida

Daniel Vargas Almeida

BP-A Beneficencia Portuguesa de São Paulo, São Paulo, Brazil

Daniel Vargas Almeida , Cleyton Z. Oliveira , Andrey Soares , RODRIGO COUTINHO MARIANO , Denis L Jardim , Diogo Assed Bastos , Fernando C. Maluf , Gustavo Werutsky , Fernando Sabino M Monteiro , Vinicius Carrera Souza , Guillermo de Velasco , Andre P. Fay , Andre Deeke Sasse , Fabio A. B. Schutz

Organizations

BP-A Beneficencia Portuguesa de São Paulo, São Paulo, Brazil, Hospital Israelita Albert Einstein and Centro Paulista de Oncologia, São Paulo, Brazil, Hospital Sirio-Libanes, São Paulo, Brazil, BP-A Beneficencia Portuguesa de São Paulo and Hospital Israelita Albert Einstein, São Paulo, Brazil, PUCRS School of Medicine and Hospital Sao Lucas da PUCRS, Porto Alegre, Brazil, Hospital Santa Lucia and Hospital Universitario de Brasilia, Brasilia, Brazil, Clinica AMO, Salvador, Brazil, 12 de Octubre Universitary Hospital, Madrid, Spain, SONHE - Sasse Oncology and Hematology Group, Campinas, Brazil

Research Funding

Other

Background: Although surgery is the cornerstone in the treatment of most cases of localized kidney cancer, up to 30% of patients will experience disease recurrence at three years of follow-up. Three RCTs with VEGFR TKIs (ASSURE, PROTECT and ATLAS) failed to demonstrate improvement in disease-free survival (DFS). Only S-TRAC trial showed a significant improvement in DFS, and was approved by the Food and Drug Administration (FDA). However, the matter remains controversial among genitourinary oncologists. Therefore, we performed a meta-analysis to better evaluate the potential benefit of adjuvant VEGFR TKIs after curative intent nephrectomy. Methods: Eligible studies were searched in PubMed databases and limited to phase 3 RCT published from January 1996 to December 2018 of US FDA-approved VEGFR TKIs reporting on patients with RCC treated in the adjuvant setting. A summary hazard-ratio (HR) of disease-free survival (DFS) was calculated using 95% CIs by random-effects or fixed-effects models on the basis of the heterogeneity of included studies. Results: Four RCT (ASSURE, S-TRAC, PROTECT and ATLAS trials) were selected for analysis, including a total of 4,820 patients. A VEGFR TKI (sunitinib, sorafenib, pazopanib or axitinib) was administered in 2,737 patients, and 2,083 received placebo. The summary DFS HR for the overall population was 0.89 (95% CI 0.79-1.00; p = 0.06). When including the report of the ASSURE with the sub-group analysis with high-risk patient population (n = 3,946), the summary HR for DFS was 0.84 (95% CI 0.75-0.95, p = 0,0044). No evidence of publication bias was found. Conclusions: This is the first meta-analysis including the four RCTs in RCC adjuvant setting. This meta-analysis failed to demonstrate improvement in DFS for patients receiving a VEGFR TKI after curative intent nephrectomy. A modest benefit in DFS was observed in a selected sub-group of patients with higher risk for recurrence. There is no data regarding overall survival.

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Abstract Details

Meeting

2019 ASCO Annual Meeting

Session Type

Poster Session

Session Title

Genitourinary (Nonprostate) Cancer

Track

Genitourinary Cancer—Kidney and Bladder

Sub Track

Kidney Cancer

Citation

J Clin Oncol 37, 2019 (suppl; abstr 4579)

DOI

10.1200/JCO.2019.37.15_suppl.4579

Abstract #

4579

Poster Bd #

405

Abstract Disclosures