PhaseBio Says Antiplatelet Candidate Achieved Primary Reversal Endpoint In Late-Stage Study

  • PhaseBio Pharmaceuticals Inc PHAS has announced interim results from the REVERSE-IT Phase 3 trial of bentracimab to reverse the antiplatelet effects of ticagrelor.
  • The trial included patients with urgent surgery or an invasive procedure or experiencing uncontrolled major or life-threatening bleeding.
  • Bentracimab was shown to reverse the effects of AstraZeneca Plc's AZN blood thinner Brilinta (ticagrelor) in an interim analysis of more than 100 patients.
  • Patients who took bentracimab saw a 135% reduction in platelet inhibition within 5 to 10 minutes of infusion and saw those effects last over 24 hours. 
  • Bentracimab appeared safe. Though 91% of patients reported a treatment-emergent side effect, the most common was pain associated with the surgical procedure. 
  • Eight experienced thrombotic events, though none of the cases were tied to bentracimab.
  • Bentracimab is a monoclonal antibody fragment that binds to Brilinta when it's in that off state and removes it from the platelet environment.
  • PhaseBio is still recruiting patients with uncontrolled major or life-threatening bleeding for the REVERSE-IT trial and aims to be fully enrolled as soon as possible.
  •  Related Link: PhaseBio's Bentracimab Reverses Ticagrelor-Associated Antiplatelet Activity In Mid-Stage Study 
  • Price Action: PHAS shares are down 20.30% at $2.96 during the market session on the last check Monday.
  • Editor's Note: The post has been revised with an updated headline to exclude side effects being treatment related.


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