Condition
Severe Hemophilia A clinical trials and research
As of November 12, 2026, Find a Trial lists 3 Severe Hemophilia A clinical trials that are recruiting, at sites in 12 countries (most in Germany (2), India (2), United States (2)). By phase: Phase 1 (1), Phase 4 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 3Clinical trials
- 12Countries
Newest Severe Hemophilia A clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Switching from Emicizumab to Marstacimab in Severe Hemophilia A | Phase 1 | La Jolla, California and 9 other locations | Recruiting | Nov 25, 2024 |
| Using Nuwiq to manage bleeding in hemophilia A patients during major surgery | Phase 4 | Dallas, Texas and 17 other locations | Recruiting | Jul 7, 2023 |
| Understanding antibody changes in hemophilia A patients treated with emicizumab | — | Frankfurt am Main, Hesse | Recruiting | Apr 7, 2023 |
All recruiting trials (3)
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Switching from Emicizumab to Marstacimab in Severe Hemophilia A
This study is testing if switching from emicizumab to marstacimab is safe and how well the body handles the new medication in people with severe hemophilia A.
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Using Nuwiq to manage bleeding in hemophilia A patients during major surgery
This study is testing if Nuwiq can help prevent bleeding during major surgery for boys and men over 12 with severe hemophilia A who are already using another treatment called emicizumab.
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Understanding antibody changes in hemophilia A patients treated with emicizumab
This study looks at how the immune system reacts to emicizumab treatment in people with severe hemophilia A by checking leftover samples from their regular doctor visits.
Related topics
Quick answers
How many Severe Hemophilia A clinical trials are recruiting right now?
3, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 12 countries. The most sites are in Germany (2 trials), India (2 trials), United States (2 trials), Turkey (Türkiye) (1 trial), Croatia (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 1: 1, Phase 4: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.