ALAMEDA - Exelixis, Inc. (Nasdaq: EXEL) today announced that COSMIC-313, the phase 3 pivotal trial evaluating the combination of cabozantinib (CABOMETYX), nivolumab (OPDIVO) and ipilimumab (YERVOY) versus the combination of nivolumab and ipilimumab in patients with previously untreated advanced intermediate- or poor-risk renal cell carcinoma (RCC), has completed enrollment.
The primary endpoint of the trial is progression-free survival, and additional endpoints include overall survival and objective response rate.
'Following the promising final results of a phase 1b trial evaluating this triplet combination in advanced genitourinary tumors, this milestone in the phase 3 pivotal trial brings us a step closer to understanding whether cabozantinib in combination with nivolumab and ipilimumab may improve outcomes for patients with previously untreated advanced kidney cancer,' said Gisela Schwab, M.D., President, Product Development and Medical Affairs and Chief Medical Officer, Exelixis. 'We look forward to sharing initial results from the event-driven analysis of COSMIC-313 when available and to learning more about the potential of cabozantinib in combination with immunotherapies.'
COSMIC-313 is a multicenter, randomized, double-blind, controlled phase 3 pivotal trial that enrolled approximately 840 patients at 180 sites globally. Patients were randomized 1:1 to receive cabozantinib plus nivolumab and ipilimumab or matching placebo plus nivolumab and ipilimumab. The design of COSMIC-313 was informed by the results of the CheckMate -214 trial that supported regulatory approval of nivolumab in combination with ipilimumab for the first-line treatment of patients with intermediate- and poor-risk RCC, and by results from the phase 1b study of cabozantinib in combination with nivolumab with or without ipilimumab in patients with relapsed or refractory metastatic genitourinary cancers, including RCC. Final results from that phase 1b trial were presented during the 2021 American Society of Clinical Oncology's Genitourinary Cancers Symposium.
About RCC
The American Cancer Society's 2021 statistics cite kidney cancer as among the top ten most commonly diagnosed forms of cancer among both men and women in the U.S.1 Clear cell RCC is the most common form of kidney cancer in adults.2 If detected in its early stages, the five-year survival rate for RCC is high; for patients with advanced or late-stage metastatic RCC, however, the five-year survival rate is only 13%.1 Approximately 32,000 patients in the U.S. and 71,000 worldwide will require systemic treatment for advanced kidney cancer in 2021.3
About 70% of RCC cases are known as 'clear cell' carcinomas, based on histology.4 The majority of clear cell RCC tumors have below-normal levels of a protein called von Hippel-Lindau, which leads to higher levels of MET, AXL and VEGF.5,6 These proteins promote tumor angiogenesis (blood vessel growth), growth, invasiveness and metastasis.7,8,9,10 MET and AXL may provide escape pathways that drive resistance to VEGF receptor inhibitors.6,7
About CABOMETYX (cabozantinib)
In the U.S., CABOMETYX tablets are approved for the treatment of patients with advanced RCC; for the treatment of patients with hepatocellular carcinoma who have been previously treated with sorafenib and for patients with advanced RCC as a first-line treatment in combination with OPDIVO. CABOMETYX tablets have also received regulatory approvals in the European Union and additional countries and regions worldwide. In 2016, Exelixis granted Ipsen exclusive rights for the commercialization and further clinical development of cabozantinib outside of the United States and Japan. In 2017, Exelixis granted exclusive rights to Takeda Pharmaceutical Company Limited for the commercialization and further clinical development of cabozantinib for all future indications in Japan. Exelixis holds the exclusive rights to develop and commercialize cabozantinib in the United States.
CABOMETYX is not indicated for use in combination with nivolumab and ipilimumab in previously untreated advanced renal cell carcinoma.
About Exelixis
Founded in 1994, Exelixis, Inc. (Nasdaq: EXEL) is a commercially successful, oncology-focused biotechnology company that strives to accelerate the discovery, development and commercialization of new medicines for difficult-to-treat cancers. Following early work in model system genetics, we established a broad drug discovery and development platform that has served as the foundation for our continued efforts to bring new cancer therapies to patients in need. Our discovery efforts have resulted in four commercially available products, CABOMETYX (cabozantinib), COMETRIQ (cabozantinib), COTELLIC (cobimetinib) and MINNEBRO (esaxerenone), and we have entered into partnerships with leading pharmaceutical companies to bring these important medicines to patients worldwide. Supported by revenues from our marketed products and collaborations, we are committed to prudently reinvesting in our business to maximize the potential of our pipeline. We are supplementing our existing therapeutic assets with targeted business development activities and internal drug discovery - all to deliver the next generation of Exelixis medicines and help patients recover stronger and live longer. Exelixis is a member of the Standard & Poor's (S&P) MidCap 400 index, which measures the performance of profitable mid-sized companies. In November 2020, the company was named to Fortune's 100 Fastest-Growing Companies list for the first time, ranking 17th overall and the third-highest biopharmaceutical company.
Forward-Looking Statements
This press release contains forward-looking statements, including, without limitation, statements related to: the therapeutic potential of the triplet combination of cabozantinib, nivolumab and ipilimumab for patients with previously untreated advanced kidney cancer, and the potential of cabozantinib in combination with immunotherapies generally and Exelixis' plans to reinvest in its business to maximize the potential of the company's pipeline, including through targeted business development activities and internal drug discovery. Any statements that refer to expectations, projections or other characterizations of future events or circumstances are forward-looking statements and are based upon Exelixis' current plans, assumptions, beliefs, expectations, estimates and projections. Forward-looking statements involve risks and uncertainties. Actual results and the timing of events could differ materially from those anticipated in the forward-looking statements as a result of these risks and uncertainties, which include, without limitation: the potential failure of the combination of cabozantinib, nivolumab and ipilimumab to demonstrate safety and/or efficacy in COSMIC-313; uncertainties inherent in the product development process; complexities and the unpredictability of the regulatory review and approval processes in the U.S. and elsewhere; Exelixis' and Bristol Myers Squibb's continuing compliance with applicable legal and regulatory requirements; the costs of conducting clinical trials, including the ability or willingness of Exelixis' collaboration partners to invest in the resources necessary to complete the trials; Exelixis' dependence on third-party vendors for the development, manufacture and supply of cabozantinib; Exelixis' and Bristol Myers Squibb's' ability to protect their respective intellectual property rights; market competition, including the potential for competitors to obtain approval for generic versions of CABOMETYX; changes in economic and business conditions, including as a result of the COVID-19 pandemic and other factors affecting Exelixis and its development programs discussed under the caption 'Risk Factors' in Exelixis' Annual Report on Form 10-K submitted to the Securities and Exchange Commission (SEC) on February 10, 2021, and in Exelixis' future filings with the SEC. All forward-looking statements in this press release are based on information available to Exelixis as of the date of this press release, and Exelixis undertakes no obligation to update or revise any forward-looking statements contained herein, except as required by law.
Contact:
Susan Hubbard
Tel: (650) 837-8194
Email: shubbard@exelixis.com
EXELIXIS, INC. 
