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Medicines MarstacimabQuestion & answer

Marstacimab · Medicine question

Is marstacimab a clotting-factor replacement?

iatroX medicinesPublished 17 August 2026Reviewed 17 August 2026

The answer

Answer

No. It blocks TFPI to increase thrombin generation rather than replacing factor VIII or IX.

Sources for this answer

Hympavzi 150 mg solution for injection in pre-filled penemc · SmPC Current selected SmPC · Version 4

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The full medicine guide

Marstacimab

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More questions about Marstacimab

What is marstacimab used for?Can marstacimab treat a breakthrough bleed?Can marstacimab be self-injected?Does marstacimab affect routine clotting tests?What should clinicians know before surgery?

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