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ATOR-1017 (evunzekibart), an Fc-gamma receptor conditional 4-1BB agonist designed for optimal safety and efficacy, activates exhausted T cells in combination with anti-PD-1

Cancer Immunol Immunother. 2023-10; 
Karin Enell Smith, Sara Fritzell, Anneli Nilsson, Karin Barchan, Anna Rosén, Lena Schultz, Laura Varas, Anna Säll, Nadia Rose, Maria Håkansson, Laura von Schantz, Peter Ellmark
Products/Services Used Details Operation
Gene Synthesis … Amp/G418 vector, GenScript) with genes encoding human or cynomolgus 4-1BB, human Fc receptors: FcγRI, FcγRIIa R131, FcγRIIa H131 and FcγRIIb or CHO-pcDNA (mock … Get A Quote


background: 4-1BB (CD137) is a co-stimulatory receptor highly expressed on tumor reactive effector T cells and NK cells, which upon stimulation prolongs persistence of tumor reactive effector T and NK cells within the tumor and induces long-lived memory T cells. 4-1BB agonistic antibodies have been shown to induce strong anti-tumor effects that synergize with immune checkpoint inhibitors. The first generation of 4-1BB agonists was, however, hampered by dose-limiting toxicities resulting in suboptimal dose levels or poor agonistic activity. methods: ATOR-1017 (evunzekibart), a second-generation Fc-gamma receptor conditional 4-1BB agonist in IgG4 format, was designed to overcome the limitations of the first gene... More


4-1BB, Antibody, CD137, Immunotherapy, PD-1, T cell activation