Using SEVENFACT® to treat bleeding in hemophilia patients with inhibitors
Official title: Safety of SEVENFACT® for the Treatment of Bleeding Events in Patients With Hemophilia A or B With Inhibitors
Run by American Thrombosis and Hemostasis Network · NCT04647227 · Data updated 2026-11-12
This study is testing if SEVENFACT® can safely help people aged 12 and older with hemophilia who have inhibitors stop bleeding during episodes.
Quick facts
| Phase | Phase 4 |
|---|---|
| Study type | Interventional |
| Ages | 12 Years to 100 Years |
| Sex | All |
| Enrollment | 55 (estimated) |
| Sponsor | American Thrombosis and Hemostasis Network Research network |
| Drugs / interventions | emicizumab |
| Locations | 21 sites (Phoenix, Arizona and 20 other locations) |
| Status | Recruiting |
| Started | June 28, 2021 |
| Main results expected | September 30, 2026 |
| Study ends | March 31, 2027 |
| Registry record updated | January 12, 2026 |
| Trial ID | NCT04647227 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are individuals aged 12 and older diagnosed with Hemophilia A or B with inhibitors, either on prophylactic treatment or at risk of breakthrough bleeding.
✕Probably not a fit
Patients with additional bleeding disorders or known hypersensitivity to SEVENFACT® or its components may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a Phase IV, multi-center, open-label safety study evaluating the use of SEVENFACT® in treating bleeding episodes in patients aged 12 and older with Hemophilia A or B who have inhibitors. Participants may be on long-term prophylactic treatment or not, and the study aims to assess the safety of SEVENFACT® in controlling breakthrough bleeding events. The study will follow participants longitudinally for up to four years, with a target enrollment of 28 to 55 participants across multiple sites in the U.S.
Why it matters
Potential benefit: If successful, this study could provide a new effective treatment option for managing bleeding events in hemophilia patients with inhibitors.
How similar studies have gone: Other studies have shown promise in using similar approaches for treating bleeding events in hemophilia, but this specific application of SEVENFACT® is being evaluated for the first time.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Have a diagnosis of hemophilia A or B with inhibitors. 2. Be 12 years of age and older 3. Be capable of understanding and willing to comply with the conditions of the protocol or have a legal guardian who is capable of understanding and complying with the conditions of the protocol 4. Have read, understood, and documented written informed consent/assent 5. Be able to provide medical evidence through prior medical history of previous inhibitor levels 6. Be willing and able to use the ATHN mobile application or a paper diary to document BEs and medication usage Exclusion Criteria: 1. Have a disorder of hemostasis in addition to Hemophilia A or B 2. Have a known or suspected intolerance or hypersensitivity to SEVENFACT® or its ingredients 3. Have a known allergy or hypersensitivity to rabbits or rabbit proteins 4. Are receiving prophylactic treatment for bleeding with a drug or biologic that is not approved for this use by the FDA 5. Have had implantation of an investigational medical device within the prior 6 months 6. Have received an investigational drug within 30 days of the baseline visit 7. Have an elective surgical procedure planned during the duration of their participation in the study\* 8. Have any life-threatening disease, or other disease or condition which, in the investigator's judgment, could pose a potential hazard to the patient or interfere with study participation or study outcome (e.g., a history of non responsiveness to bypassing products or thromboembolic disease) * Should a participant require an unplanned surgery, the participant will not be withdrawn from the study unless the investigator deems it necessary. Instead, the participant will receive standard of care treatment as determined by the attending physician. If the participant is not withdrawn from the study, the participant's participation in the study will be paused until the investigator feels it is safe for them to continue.
Where it's running
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Arkansas Center for Bleeding Disorders
Little Rock, Arkansas, United States Recruiting -
Orthopaedic Institute for Children
Los Angeles, California, United States Recruiting -
University of California at Davis UC Davis Hemostasis and Thrombosis Center
Sacramento, California, United States Recruiting -
Hemophilia of Georgia Center for Bleeding and Clotting Disorders of Emory, Adult Division
Atlanta, Georgia, United States Recruiting -
Willett Children's Hospital at Memorial University Medical Center
Savannah, Georgia, United States Recruiting -
Massachusetts General Hospital Comprehensive Hemophilia and Thrombosis Treatment Center
Boston, Massachusetts, United States Recruiting
Show 15 more locations
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Children's Hospital of Michigan
Detroit, Michigan, United States Recruiting -
Henry Ford Health System
Detroit, Michigan, United States Recruiting -
MSU Center for Bleeding and Clotting Disorders
Lansing, Michigan, United States Recruiting -
Kansas City Regional Hemophilia Center
Kansas City, Missouri, United States Recruiting -
Northwell Health, Long Island Jewish
New Hyde Park, New York, United States Recruiting -
University Hospitals Health System Cleveland
Cleveland, Ohio, United States Recruiting -
Oklahoma Center for Bleeding and Clotting Disorders
Oklahoma City, Oklahoma, United States Recruiting -
Vanderbilt University Medical Center
Nashville, Tennessee, United States Recruiting -
Gulf States Hemophilia and Thrombophilia Center-University of Texas Health Science Center @Houston
Houston, Texas, United States Recruiting -
Arizona Hemophilia and Thrombosis Center at Phoenix Children's Hospital
Phoenix, Arizona, United States Completed -
Children's National Hemophilia Center
Washington D.C., District of Columbia, United States Completed -
Arnold Palmer Hospital for Children - The Haley Center for Children's Cancer and Blood Disorders
Orlando, Florida, United States Completed -
Center for Bleeding and Clotting Disorders, University of Minnesota
Minneapolis, Minnesota, United States Not yet recruiting -
Mayo Comprehensive Hemophilia Center
Rochester, Minnesota, United States Completed -
Brody School of Medicine at East Carolina University
Greenville, North Carolina, United States Not yet recruiting
Study contacts
- Principal investigator: Tammuella Chrisentery-Singleton, MD — American Thrombosis and Hemostasis Network
- Study coordinator: Carol Fedor, ND, RN, CCRC
- Email: cfedor@athn.org
- Phone: (800)-360-2846
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Evaluating FVIII Doses for Immune Tolerance in Hemophilia A Boys with Inhibitors
This study is testing different doses of a treatment for boys with severe Hemophilia A who have developed inhibitors to see if it can help them respond better and reduce bleeding.
-
Treatment for Hemophilia A in Adolescents and Adults with High Titer Inhibitor
This study is testing if a new treatment for hemophilia A, using a drug called SCT800 alone or with another drug called Daratumumab, can help teenagers and adults with high titer inhibitors feel better and have fewer relapses.
-
Evaluating the effects of a treatment on bone health in patients with severe hemophilia A
This study is testing how a new treatment for severe hemophilia A affects bone and joint health over time to help make monitoring easier for patients.
-
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.
-
Looking at chronic pain in adults with severe haemophilia A
This project will see if chronic pain in adults with severe haemophilia A who have been on bispecific monoclonal antibodies is linked to pain catastrophising, confidence in managing pain, and body image.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.