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FDA places partial clinical hold on odronextamab trials in B-cell non-Hodgkin lymphomas

By Sumayya Khan

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Jan 11, 2021


On December 14, 2020, it was reported that the U.S. Food and Drug Administration (FDA) has placed a partial clinical hold on trials of odronextamab, a CD20 and CD3 bispecific antibody, in B-cell non-Hodgkin lymphomas (B-NHL). This was based on the incidence of ≥ Grade 3 cytokine release syndrome during step-up dosing. Therefore, enrollment into the clinical trials has paused to allow for protocol amendment to reduce the incidence of this adverse event.1

The two trials currently affected are:

  • NCT02290951: a multicenter, open-label, phase I trial, investigating the safety and tolerability of odronextamab in patients with CD20+ B-NHL and chronic lymphocytic leukemia, previously treated with CD20-directed antibody therapy.1,2
    • Most recent trial results were presented at the 62nd American Society of Hematology (ASH) Annual Meeting and Exposition and are summarized in our video interview with Rajat Bannerji.  
  • NCT03888105: a phase II, open-label trial, investigating the antitumor activity and safety of odronextamab in patients with relapsed/refractory B-NHL.1,3
    • Most recent trial results were presented at the 62nd American Society of Hematology (ASH) Annual Meeting and Exposition as a poster presentation.4

Upon acceptance of the protocol amendment, patient enrollment is hoped to continue in the first quarter of 2021.

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