Condition
Hemophilia A or B clinical trials and research
As of November 12, 2026, Find a Trial lists 2 Hemophilia A or B clinical trials that are recruiting, at sites in 2 countries (most in United States (1), China (1)). 1 was first registered in the last 30 days. By phase: Phase 3 (2). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 2Clinical trials
- 1New in 30 days
- 2Countries
All recruiting trials (2)
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Marstacimab for mild to moderate hemophilia A or B in people without inhibitors
This study tests whether weekly injections of marstacimab can reduce bleeding in adolescents and adults with mild to moderate hemophilia A or B who don’t have inhibitors.
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Long-term preventive KN057 treatment for Hemophilia A and B
This trial will try long-term KN057 preventive treatment to see if it is safe and helps males aged 12–65 with Hemophilia A or B, with or without inhibitors.
Related topics
Quick answers
How many Hemophilia A or B clinical trials are recruiting right now?
2, as of November 12, 2026. 1 of them was first registered in the last 30 days. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 2 countries. The most sites are in United States (1 trial), China (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 3: 2. 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.