113103-132

Record-3: Phase II randomized trial comparing sequential first-line everolimus (EVE) and second-line sunitinib (SUN) versus first-line SUN and second-line EVE in patients with metastatic renal cell carcinoma (mRCC).

Subcategory: 
Category: 
Genitourinary (Nonprostate) Cancer
Session Type and Session Title: 
Oral Abstract Session, Genitourinary (Nonprostate) Cancer
Abstract Number: 

4504

Citation: 

J Clin Oncol 31, 2013 (suppl; abstr 4504)

Author(s): 

Robert John Motzer, Carlos H. Barrios, Tae Min Kim, Silvia Falcon, Thomas Cosgriff, W. Graydon Harker, Kenneth B. Pittman, Roberto Sabbatini, Sun Young Rha, Thomas W. Flaig, Ray D. Page, Sevil E. Bavbek, J. Thaddeus Beck, Poulam M Patel, Edward Schiff, Alexandra Vaury, Julie Niolat, Sven Gogov, Ozlem Anak, Jennifer Knox; Memorial Sloan-Kettering Cancer Center, New York, NY; PUCRS School of Medicine, Porto Alegre, Brazil; Seoul National University Hospital, Seoul, South Korea; Hospital Nacional Edgardo Rebagliati Martins, Lima, Peru; Hematology and Oncology Specialists, Metairie, LA; Utah Cancer Specialists, Salt Lake City, UT; The Queen Elizabeth Hospital, Adelaide, Australia; Azienda Ospedaliero-Universitaria, Modena, Italy; Yonsei Cancer Center, Seoul, South Korea; University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO; The Center for Cancer and Blood Disorders, Fort Worth, TX; American Hospital, Istanbul, Turkey; Highlands Oncology Group, Fayetteville, AR; University of Nottingham, Nottingham, United Kingdom; Novartis Oncology, Novartis Pharmaceuticals, Florham Park, NJ; Novartis Oncology, Novartis Pharma SAS, Rueil-Malmaison, France; Novartis Pharma AG, Basel, Switzerland; University of Toronto, Princess Margaret Hospital, Toronto, ON, Canada


Abstracts that were granted an exception in accordance with ASCO's Conflict of Interest Policy are designated with a caret symbol (^).

Abstract Disclosures

Abstract: 

Background: Sequential SUN (tyrosine kinase inhibitor, TKI) until progression of disease (PD) followed by EVE (mTOR inhibitor) is standard therapy for patients with mRCC. This open-label, multicenter, phase II trial compared 1st-line EVE to 1st-line SUN (NCT00903175). Sequential EVE→SUN was also compared with standard SUN→EVE. Methods: Patients with mRCC (clear or non-clear cell) naive to prior systemic therapy were randomized 1:1 to either 1st-line EVE 10 mg/day or SUN 50 mg/day (4 weeks on, 2 weeks off) until PD. Patients then crossed over and continued on the alternate drug until PD. Primary objective was to assess PFS noninferiority of 1st-line EVE to 1st-line SUN; defined as an observed hazard ratio (HR)1st EVE/SUN ≤1.1. Overall survival (OS), combined 1st-line and 2nd-line PFS, and safety were secondary end points. Results: From10/09 to 6/11, 471 patients enrolled (EVE→SUN, n = 238; SUN→EVE, n = 233). Median age was 62 years, 85.4% had clear-cell RCC, and MSKCC favorable/intermediate/poor risk was 30/56/14%. Median follow-up was 22.7 months. A total of 53.7% of patients who discontinued 1st-line EVE entered into 2nd-line SUN and 51.6% of patients who discontinued 1st-line SUN entered into 2nd-line EVE. Median PFS (95% CI) was 7.9 (5.6-8.2) months for 1st-line EVE and 10.7 (8.2-11.5) months for 1st-line SUN. HR1st EVE/1st SUN (95% CI) was 1.43 (1.15-1.77). Median OS (95% CI) was 22.4 (19.7-NA) months for EVE→SUN and 32.0 (20.5-NA) months for SUN→EVE; HREVE-SUN/SUN-EVE (95% CI) was 1.24 (0.94-1.64). A trend in favor of SUN→EVE for OS was observed, but will need to be confirmed with final OS analysis. Additional efficacy results for secondary end points are forthcoming. Common treatment-emergent adverse events for 1st-line EVE vs SUN, respectively, were stomatitis (53% vs 57%), fatigue (45% vs 51%), and diarrhea (38% vs 57%). Conclusions: Noninferiority of PFS for 1st-line EVE compared with SUN was not achieved in this randomized phase II trial of mRCC patients. The treatment paradigm remains SUN→EVE since the sequence achieved optimal clinical benefit. Clinical trial information: NCT00903175.