RESEARCH FOCUS: Immuno-oncology
NKTR-255 is a memory T cell stimulating cytokine designed to engage the IL-15 pathway to induce long-term T cell activation and improve the quality of T cell memory response to treat cancer. Through optimal engagement of the IL-15Rα/IL-2Rγ receptor complex, NKTR-255 stimulates proliferation and survival of CD8+ T cells, natural killer (NK) cells and enhances formation of long-term immunological memory which may lead to sustained anti-tumor immune response. Native rhIL-15 is rapidly cleared from the body and must be administered frequently and in high doses limiting its utility due to toxicity. NKTR-255 is designed with IL-15 receptor alpha specificity to optimize biological activity and is uniquely engineered to provide optimal exposure and an improved safety profile.
- Abstract #418: "Pre-clinical investigation of NKTR-255, a polymer-conjugated IL-15 with a potent NK cell dependent anti-tumor efficacy", Miyazaki, T., et al.
- Abstract #422: "A polymer-associated human IL-15 (NKTR-255) has optimized biological activity and unique mechanisms of action on CD8 T Cells and NK Cells", Robinson T., et al.
2018 American Conference on Pharmacometrics (ACoP), San Diego, CA
- Poster T-039: "NKTR-255 Exhibits Target Mediated Drug Disposition and Stimulates Proliferation of Cytotoxic Immune Cells in Cynomolgus Monkeys"
CHI 3rd Annual NK Cell-Based Cancer Immunotherapy Conference, Boston, MA
CHI 2nd Annual Emerging Immuno-Oncology Targets Conference, Boston, MA
- NKTR-255: Accessing IL-15 Therapeutic Potential through Robust and Sustained Engagement of Innate and Adaptive Immunity
Society for Immunotherapy in Cancer (SITC) 32nd Annual Meeting, National Harbor, MD
- Poster #P332: Pre-clinical efficacy and tolerability of NKTR-255, a polymer-conjugated IL-15 for immuno-oncology, Kirk, P., et al.
2017 American Association for Cancer Research (AACR) Annual Meeting
- Abstract 1603/Poster 11: NKTR-255 engages the IL-15 pathway driving CD8 T cell survival and CD8 memory T cell proliferation
2016 SITC Annual Meeting