Exelixis and Ryvu Therapeutics Establish Exclusive License Agreement to Develop Novel STING Agonist-Based Targeted Cancer Therapies - Seite 2

The STING pathway can be activated in immune cells in the tumor microenvironment and in tumor cells, and induces innate and adaptive immunity via activation of antigen presenting cells (APCs), cytotoxic T cells and natural killer (NK) cells. Targeted delivery of Ryvu’s STING agonist payloads could provide a differentiated and novel mechanism of action for killing cancer cells. Ryvu’s STING agonists have been rationally designed for differentiation from competitor compounds and have demonstrated STING-dependent, durable anti-tumor activity and cytokine release in preclinical models.

“Ryvu has leveraged its in-depth structural protein knowledge to rationally design small molecules that are structurally distinct from known STING agonists and outperform most other potentially competitive compounds in in vitro immune cell assays,” said Krzysztof Brzózka, Ph.D., Chief Scientific Officer, Ryvu. “Exelixis’ expertise in the development of targeted cancer therapies and its growing network of biologics resources and assets make it the partner of choice for realizing the potential of our STING technology as the foundation for novel cancer therapies and provides another strong validation for our immune-oncology acumen and Ryvu discovery platform. We are excited to partner with a leading oncology company that shares our passion for innovation, strives toward achieving a meaningful impact on patient care, and advances the boundaries of oncology therapeutics development.”

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. For more information about Exelixis, please visit www.exelixis.com, follow @ExelixisInc on Twitter or like Exelixis, Inc. on Facebook.