On October 4 , 2016 – Affimed N.V. (Nasdaq: AFMD), a clinical stage biopharmaceutical company focused on discovering and developing highly targe ted cancer immunotherapies, announced today the presentation of preclinical data on the Company’s lead candidate AFM13 , a bispecific NK – cell – engaging TandAb targeting CD30/CD16A , at the 16th Annual Meeting of the Society for Natural Immunity in Taormina, Italy (Press release, Affimed, OCT 4, 2016, View Source [SID1234515989]).
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The data, generated in Affimed’s collaboration with the Innate Immunity Group of Dr. Adelheid Cerwenka at the German Cancer Research Center (DKFZ) in Heidelberg, Germany, were presented in a poster ti tled " The bispecific CD3 0/CD16A TandAb AFM13 amplifies the cytolytic and proliferative potential of NK – cells " yesterday, October 3, 2016 .
In this preclinical study, the specific phenotype and functionality of human NK – cells when redirected to AFM13 – coated tumor cells, as well as their responsiveness to cytokines , were analyzed. The results show that AFM13 improves NK – cell cytotoxicity against CD30+ tumor cells that are resistant to naïve NK – cells. Using CFSE – labelled NK – cells, the researchers demonstrated that AFM13 amplifies cytokine – mediated NK – cell proliferation and expansion by enhancing the NK – cells’ sensitivity to IL – 2 and IL – 15. These data indicate that cytokine administration in combination with AFM13 might potentially enhance NK – cell activity in the tumor microenvironment.
AFM13 is a tetravalent bispecific TandAb antibody that binds bivalently to both CD30 on tumor cells and CD16A on NK – cells. The molecule has been shown to engage NK – cells through CD16A with high affinity and specificity, resulting in strong NK – cell – mediated cytotoxicity. AFM13 is currently being tested in Hodgkin lymphoma patients as a monotherapy (Phase 2) and in combination with Merck’s Keytruda (Phase 1b).