alexa A phase 1 study of the bispecific anti-CD30 CD16A antibody construct AFM13 in patients with relapsed or refractory Hodgkin lymphoma.
Medicine

Medicine

Translational Medicine

Author(s): Rothe A, Sasse S, Topp MS, Eichenauer DA, Hummel H,

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Abstract AFM13 is a bispecific, tetravalent chimeric antibody construct (TandAb) designed for the treatment of CD30-expressing malignancies. AFM13 recruits natural killer (NK) cells via binding to CD16A as immune effector cells. In this phase 1 dose-escalation study, 28 patients with heavily pretreated relapsed or refractory Hodgkin lymphoma received AFM13 at doses of 0.01 to 7 mg/kg body weight. Primary objectives were safety and tolerability. Secondary objectives included pharmacokinetics, antitumor activity, and pharmacodynamics. Adverse events were generally mild to moderate. The maximum tolerated dose was not reached. Pharmacokinetics assessment revealed a half-life of up to 19 hours. Three of 26 evaluable patients achieved partial remission (11.5\%) and 13 patients achieved stable disease (50\%), with an overall disease control rate of 61.5\%. AFM13 was also active in brentuximab vedotin-refractory patients. In 13 patients who received doses of ≥1.5 mg/kg AFM13, the overall response rate was 23\% and the disease control rate was 77\%. AFM13 treatment resulted in a significant NK-cell activation and a decrease of soluble CD30 in peripheral blood. In conclusion, AFM13 represents a well-tolerated, safe, and active targeted immunotherapy of Hodgkin lymphoma. A phase 2 study is currently planned to optimize the dosing schedule in order to further improve the therapeutic efficacy. This phase 1 study was registered at www.clinicaltrials.gov as #NCT01221571. © 2015 by The American Society of Hematology.
This article was published in Blood and referenced in Translational Medicine

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