Benjamin T Ristau1, Judi Manola2, Naomi B Haas3, Daniel Y C Heng4, Edward M Messing5, Christopher G Wood6, Christopher J Kane7, Robert S DiPaola8, Robert G Uzzo9. 1. Fox Chase Cancer Center, Temple Health, Philadelphia, Pennsylvania. Electronic address: benristaumd@gmail.com. 2. ECOG-ACRIN Biostatistics Center, Dana-Farber Cancer Institute, Boston, Massachusetts. 3. Abramson Cancer Center of University of Pennsylvania, Philadelphia, Pennsylvania. 4. Tom Baker Cancer Center, University of Calgary, Calgary, Alberta, Canada. 5. Department of Urology, University of Rochester, Rochester, New York. 6. University of Texas M. D. Anderson Cancer Center, Houston, Texas. 7. Moores Cancer Center, University of California-San Diego, La Jolla, California. 8. Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey. 9. Fox Chase Cancer Center, Temple Health, Philadelphia, Pennsylvania.
Abstract
PURPOSE:Lymphadenectomy is a well established practice for many urological malignancies but its role in renal cell carcinoma is less clear. Our primary objective was to determine whether lymphadenectomy impacted survival in patients with fully resected, high risk renal cell carcinoma. MATERIALS AND METHODS:Patients with fully resected, high risk, nonmetastatic renal cell carcinoma were randomized to adjuvant sorafenib, sunitinib or placebo in the ASSURE (Adjuvant Sorafenib and Sunitinib for Unfavorable Renal Carcinoma) trial. Lymphadenectomy was performed for cN+ disease or at surgeon discretion. Patients treated with lymphadenectomy were compared to patients in the trial who did not undergo lymphadenectomy. The primary outcome was overall survival associated with lymphadenectomy. Secondary outcomes were disease free survival, factors associated with performing lymphadenectomy and surgical complications. RESULTS: Of the 1,943 patients in ASSURE 701 (36.1%) underwentlymphadenectomy, including all resectable patients with cN+ and 30.1% of those with cN0 disease. A median of 3 lymph nodes (IQR 1-8) were removed and the rate of pN+ disease in the lymphadenectomy group was 23.4%. There was no overall survival benefit for lymphadenectomy relative to no lymphadenectomy (HR 1.14, 95% CI 0.93-1.39, p = 0.20). In patients with pN+ disease who underwentlymphadenectomy no improvement in overall or disease-free survival was observed for adjuvant therapy relative to placebo. Lymphadenectomy did not confer an increased risk of surgical complications (14.2% vs 13.4%, p = 0.63). CONCLUSIONS: The benefit of lymphadenectomy in patients undergoing surgery for high risk renal cell carcinoma remains uncertain. Future strategies to answer this question should include a prospective trial in which patients with high risk renal cell carcinoma are randomized to specific lymphadenectomy templates.
RCT Entities:
PURPOSE: Lymphadenectomy is a well established practice for many urological malignancies but its role in renal cell carcinoma is less clear. Our primary objective was to determine whether lymphadenectomy impacted survival in patients with fully resected, high risk renal cell carcinoma. MATERIALS AND METHODS:Patients with fully resected, high risk, nonmetastatic renal cell carcinoma were randomized to adjuvant sorafenib, sunitinib or placebo in the ASSURE (Adjuvant Sorafenib and Sunitinib for Unfavorable Renal Carcinoma) trial. Lymphadenectomy was performed for cN+ disease or at surgeon discretion. Patients treated with lymphadenectomy were compared to patients in the trial who did not undergo lymphadenectomy. The primary outcome was overall survival associated with lymphadenectomy. Secondary outcomes were disease free survival, factors associated with performing lymphadenectomy and surgical complications. RESULTS: Of the 1,943 patients in ASSURE 701 (36.1%) underwent lymphadenectomy, including all resectable patients with cN+ and 30.1% of those with cN0 disease. A median of 3 lymph nodes (IQR 1-8) were removed and the rate of pN+ disease in the lymphadenectomy group was 23.4%. There was no overall survival benefit for lymphadenectomy relative to no lymphadenectomy (HR 1.14, 95% CI 0.93-1.39, p = 0.20). In patients with pN+ disease who underwent lymphadenectomy no improvement in overall or disease-free survival was observed for adjuvant therapy relative to placebo. Lymphadenectomy did not confer an increased risk of surgical complications (14.2% vs 13.4%, p = 0.63). CONCLUSIONS: The benefit of lymphadenectomy in patients undergoing surgery for high risk renal cell carcinoma remains uncertain. Future strategies to answer this question should include a prospective trial in which patients with high risk renal cell carcinoma are randomized to specific lymphadenectomy templates.
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