Clinical trials · Seattle, WA
Hemophilia B clinical trials in Seattle
We’re tracking 3 recruiting hemophilia b studies with a site in or near Seattle — including Phase 3 studies, each written for real people, not researchers.
Recruiting studies near Seattle
- NCT05962398Enrolling by invitation
Follow-up study for men previously treated with CSL222
This study checks long-term safety and outcomes in men with hemophilia B who previously received CSL222. It may help your care team better understand how well the treatment lasts over many years.
Seattle, WashingtonAges 18 years+ - NCT05145127RecruitingPhase 3
Marstacimab follow-up study for people with hemophilia
This Phase 3 study looks at how well and how safely marstacimab works over a longer follow-up period. You may join if you already finished a related parent study for hemophilia, and you can keep up with frequent visits and lab tests.
Seattle, WashingtonAges 1–74 - NCT05568719RecruitingPhase 3
Testing gene therapy for hemophilia A or B
This Phase 3 trial is checking how safe and effective two gene therapies are for people with hemophilia A or hemophilia B. It only includes people who already received the study medicines through specific Pfizer studies, so it’s mainly for that existing participant group.
Seattle, WashingtonAges 18 years+
Hear when a new Hemophilia B trial opens near Seattle, WA
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Hemophilia B trials in other cities
Where these studies are running near Seattle
Institutions with a site for the recruiting hemophilia b studies listed above.
- Washington Institute For Coagulation · 3 studies
What taking part in a hemophilia b study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Looking wider? See all recruiting hemophilia b studies in Washington.
Common questions
- Are there hemophilia b clinical trials near Seattle?
- Yes. We're currently tracking 3 recruiting hemophilia b studies with a site near Seattle, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a hemophilia b study near Seattle?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in Seattle to take part?
- Not necessarily. These studies have a site near Seattle, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a hemophilia b trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New hemophilia b studies open near Seattle regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.