Marstacimab for Severe Hemophilia A and B

We are studying the long-term safety and effectiveness of marstacimab in people aged 1 to 75 with severe hemophilia A or B, with or without inhibitors. This research aims to improve treatment options for managing this condition.

What diseases are being studied?

Health conditions and diseases that the clinical trial is designed to study and treat.

Who can participate in the clinical trial?

These questions help us understand your situation so we can let the trial team know whether you might be a potential match. This is not a medical evaluation and is not part of the official screening, the study doctor will make the final decision..

What active substances are being studied?

Active substances that are officially approved for use in the European Union and considered safe by EMA. These substances are already on the market and may be tested for new conditions or populations.

Marstacimab
Marstacimab is an antibody that helps prevent bleeding in people with hemophilia by boosting blood clotting.

Where is the clinical trial being conducted?

Locations and medical facilities where this clinical trial is currently recruiting or conducting research. Select the locations where you would like to participate.

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Medizinische Universität Wien
Klinik für Kinder und Jugendheilkunde Gerinnungsambulanz
Vienna, Austria
KBC Zagreb
Department for pediatric haemato-oncology
Zagreb, Croatia
University Hospital Centre Zagreb
Department of haematology
Zagreb, Croatia

Sponsor: Pfizer Inc.
Last updated: Nov 27, 2025

Disclaimer: Parts of this content have been automatically extracted from the EU Clinical Trials registry. While we strive for accuracy, please always contact the trial site or sponsor directly for correct and official information before making any decisions about participation. View on EU Clinical Trials.