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October, 2026
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Wolfgang Miesbach: Milvexian After Acute Coronary Syndrome – What LIBREXIA ACS Found
Oct 8, 2026, 11:45

Wolfgang Miesbach: Milvexian After Acute Coronary Syndrome – What LIBREXIA ACS Found

Wolfgang Miesbach, Head of Hemostasis/Hemophilia Center at Medical Clinic 2 at University Hospital Frankfurt, shared a post on LinkedIn about a recent article by C. Michael Gibson et al, published in the New England Journal of Medicine, adding:

“14,194 patients to confirm what factor XI deficiency already suggested

People born with low factor XI have fewer strokes and venous clots, with little spontaneous bleeding.

The evidence that they have fewer heart attacks is weak.

Milvexian is an oral tablet that blocks activated factor XI (FXIa).

LIBREXIA ACS tested it after a heart attack:

  • 14,194 patients, within 7 days of an acute coronary syndrome
  • 25 mg twice daily or placebo, on top of dual antiplatelet therapy (95%)
  • Stopped early for lack of benefit; median follow-up 12.2 months
  • CV death, heart attack or ischaemic stroke: 5.4% vs 5.1% (HR 1.05)
  • Intracranial or fatal bleeding: 0.3% in both groups
  • The drug was working: aPTT about 60% longer than before treatment

The authors explanation: FXI may matter more for clots in small arteries, such as those in the brain, than in the coronary arteries.

This fits OCEANIC-STROKE, where another FXIa inhibitor, asundexian, added to antiplatelet therapy cut recurrent ischaemic stroke from 8.4% to 6.2%.”

Title: Milvexian with Antiplatelet Therapy after Acute Coronary Syndrome Event

Authors: C. Michael Gibson, P. Gabriel Steg, M. Cecilia Bahit, Rasha Al-Lamee, Shamir R. Mehta, Roxana Mehran, Jeffrey I. Weitz, Shinya Goto, Jose Carlos Nicolau, Renato D. Lopes, Junbo Ge, Nebojsa Tasic, Dominick J. Angiolillo, Suzanne J. Baron, Ajay J. Kirtane, Denis Xavier, Satoshi Yasuda, Basil S. Lewis, Duk-Woo Park, Jan H. Cornel, Thomas W. Johnson, Jaroslaw Trebacz, Daniel Duerschmied, Christoph Bode, Bela Merkely, Maria Dorobantu, Dragos Vinereanu, Zuzana Motovska, Hector Bueno, Jose Luis Lopez-Sendon, Gregory Ducrocq, Giuseppe Ambrosio, Lesley Burgess, Allan Bohm, Chern-En Chiang, Joao Morais, Alan Fong, Umit Guray, Jose Luis Leiva-Pons, Pascal Vranckx, Harvey D. White, Sasko Kedev, Marco Valgimigli, Duško Cerovec, Dimitris Tousoulis, Gemma Figtree, Thuong Dung Ho, Rody G. Sy, Morten Bøttcher, Kurt Huber, Rimvydas Slapikas, Andrejs Erglis, Jack Wei Chieh Tan, Christian Pincetti, Karen S. Pieper, Kenneth W. Mahaffey, Carolyn S.P. Lam, S. Claiborne Johnston, Graeme J. Hankey, Jennifer S. Li, Luke Zheng, Ronald Aronson, Danshi Li, Ravi Notani, Philippe Vieira Pires, Thomas J. Povsic, Alistair C. Lindsay, Alexei Plotnikov, Hsiaowei Deng, Elliot S. Barnathan, Robert A. Harrington

Wolfgang Miesbach: Milvexian After Acute Coronary Syndrome - What LIBREXIA ACS Found

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