On July 30, 2021 Affimed N.V. (Nasdaq: AFMD), a clinical-stage immuno-oncology company committed to giving patients back their innate ability to fight cancer, reported the publication of a comprehensive preclinical in vitro and in vivo data package of its innate cell engager (ICE) AFM24 (CD16A/EGFR) in mAbs (Press release, Affimed, JUL 30, 2021, View Source [SID1234585476]). The published data were the basis for the Investigational New Drug (IND) clearance for Affimed’s ongoing Phase 1/2a study with AFM24 monotherapy in patients with EGFR expressing solid tumors. The preclinical data demonstrates AFM24’s unique mechanism of action that harnesses the innate immune system to induce tumor cell killing via antibody-dependent cell-mediated cytotoxicity (ADCC) and antibody-dependent cell phagocytosis (ADCP).
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"These pre-clinical data are encouraging as they demonstrate the potential for AFM24 to effectively target a broad set of tumors expressing varying levels of EGFR, regardless of their mutational status, and with the potential for less pronounced EGFR-related toxicities than current treatment options," said Arndt Schottelius, M.D., Ph.D., Chief Scientific Officer at Affimed. "This could be highly relevant for many patients with different tumor types despite existing EFGR-targeting therapies as these have limitations in efficacy and safety."
Highlights of the recently published results include:
AFM24 binds with high affinity to CD16A on NK cells and macrophages in vitro.
AFM24 potently induces ADCC via NK cells, and ADCP via macrophages in vitro.
AFM24 is effective against many EGFR-positive tumor cells, regardless of EGFR expression level and KRAS/BRAF mutational status within in vitro studies.
AFM24 is well tolerated up to the highest dose level (75 mg/kg) with no skin and other toxicities in cynomolgus monkeys.
The full manuscript is available here: https://bit.ly/3zLDq3i
About AFM24
AFM24 is a tetravalent, bispecific innate cell engager (ICE) that activates the innate immune system by binding to CD16A on innate immune cells and EGFR, a protein widely expressed on solid tumors, to kill cancer cells. Generated by Affimed’s fit-for-purpose ROCK platform, AFM24 represents a distinctive mechanism of action that uses EGFR as a docking site to engage innate immune cells for tumor cell killing through antibody-dependent cellular cytotoxicity and antibody-dependent cellular phagocytosis.
Affimed is evaluating AFM24 as a monotherapy for patients with advanced EGFR-expressing solid malignancies whose disease has progressed after treatment with previous anticancer therapies. AFM24-101 is a first-in-human Phase 1/2a open-label, non-randomized, multi-center, multiple ascending dose escalation and expansion study and can be found at www.clinicaltrials.gov using the identifier NCT04259450. In addition, Affimed is planning to initiate further studies evaluating AFM24 in combination with Roche’s atezolizumab, an anti-PD-L1 checkpoint inhibitor and, separately, an investigation of AFM24 in combination with NKGen Biotech’s autologous NK cell product.