NCT04647227RecruitingPhase 4
SEVENFACT® for Bleeding Events in Hemophilia With Inhibitors
Safety of SEVENFACT® for the Treatment of Bleeding Events in Patients With Hemophilia A or B With Inhibitors
Source: ClinicalTrials.gov · Last updated 12 Jan 2026
Brief summary (registry, in English)
Phase IV multi-center, US-centric, open-label, safety study enrolling participants with Hemophilia A or B with inhibitors, 12 years of age and older, who are either on long term prophylactic treatment (e.g., emicizumab) at risk of experiencing a breakthrough bleeding event (BE), or who are not on prophylactic treatment who may need to control a BE.
- Status (registry)
- Recruiting
- Phase (registry)
- Phase 4
- Study type
- Interventional
- Enrollment
- 55 (estimated)
- First submitted
- 23 Nov 2020
- Start date
- 28 Jun 2021
- Primary completion date
- 30 Sept 2026
- Lead sponsor
- American Thrombosis and Hemostasis Network
- Diseases
- Haemophilia
- NCT number
- NCT04647227
What you commit to
- Study type: Interventional · Phase 4
- Planned participants: 55
- From 28 Jun 2021 to the primary completion date, 30 Sept 2026
- 21 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Are receiving prophylactic treatment for bleeding with a drug or biologic that is not approved for this use by the FDA
- Have had implantation of an investigational medical device within the prior 6 months
- Have received an investigational drug within 30 days of the baseline visit
- Have an elective surgical procedure planned during the duration of their participation in the study\*
Other illness
- Have a disorder of hemostasis in addition to Hemophilia A or B
- Have a known or suspected intolerance or hypersensitivity to SEVENFACT® or its ingredients
- Have a known allergy or hypersensitivity to rabbits or rabbit proteins
- 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- Should a participant require an unplanned surgery, the participant will not be withdrawn from the study unless the investigator deems it necessary.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.
Who the study is looking for
- Have a diagnosis of hemophilia A or B with inhibitors.
- Be 12 years of age and older
- 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
- Have read, understood, and documented written informed consent/assent
- Be able to provide medical evidence through prior medical history of previous inhibitor levels
- Be willing and able to use the ATHN mobile application or a paper diary to document BEs and medication usage
Age in the registry: 12 years to 100 years · Sex: All · Does not accept healthy volunteers
Sites (21)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Hemophilia of Georgia Center for Bleeding and Clotting Disorders of Emory, Adult Division Coordinator of this site? Confirm its status | Atlanta | United States | Recruiting |
| Massachusetts General Hospital Comprehensive Hemophilia and Thrombosis Treatment Center Coordinator of this site? Confirm its status | Boston | United States | Recruiting |
| University Hospitals Health System Cleveland Coordinator of this site? Confirm its status | Cleveland | United States | Recruiting |
| Children's Hospital of Michigan Coordinator of this site? Confirm its status | Detroit | United States | Recruiting |
| Henry Ford Health System Coordinator of this site? Confirm its status | Detroit | United States | Recruiting |
| Brody School of Medicine at East Carolina University Coordinator of this site? Confirm its status | Greenville | United States | Not yet recruiting |
| Gulf States Hemophilia and Thrombophilia Center-University of Texas Health Science Center @Houston Coordinator of this site? Confirm its status | Houston | United States | Recruiting |
| Kansas City Regional Hemophilia Center Coordinator of this site? Confirm its status | Kansas City | United States | Recruiting |
| MSU Center for Bleeding and Clotting Disorders Coordinator of this site? Confirm its status | Lansing | United States | Recruiting |
| Arkansas Center for Bleeding Disorders Coordinator of this site? Confirm its status | Little Rock | United States | Recruiting |
| Orthopaedic Institute for Children Coordinator of this site? Confirm its status | Los Angeles | United States | Recruiting |
| Center for Bleeding and Clotting Disorders, University of Minnesota Coordinator of this site? Confirm its status | Minneapolis | United States | Not yet recruiting |
| Vanderbilt University Medical Center Coordinator of this site? Confirm its status | Nashville | United States | Recruiting |
| Northwell Health, Long Island Jewish Coordinator of this site? Confirm its status | New Hyde Park | United States | Recruiting |
| Oklahoma Center for Bleeding and Clotting Disorders Coordinator of this site? Confirm its status | Oklahoma City | United States | Recruiting |
| Arnold Palmer Hospital for Children - The Haley Center for Children's Cancer and Blood Disorders Coordinator of this site? Confirm its status | Orlando | United States | Completed |
| Arizona Hemophilia and Thrombosis Center at Phoenix Children's Hospital Coordinator of this site? Confirm its status | Phoenix | United States | Completed |
| Mayo Comprehensive Hemophilia Center Coordinator of this site? Confirm its status | Rochester | United States | Completed |
| University of California at Davis UC Davis Hemostasis and Thrombosis Center Coordinator of this site? Confirm its status | Sacramento | United States | Recruiting |
| Willett Children's Hospital at Memorial University Medical Center Coordinator of this site? Confirm its status | Savannah | United States | Recruiting |
| Children's National Hemophilia Center Coordinator of this site? Confirm its status | Washington D.C. | United States | Completed |
Related publications
- Safety and real-world effectiveness of eptacog beta with emicizumab prophylaxis: an interim analysis of the ATHN 16 study.Blood Vessel Thromb Hemost · 2026 · PMID 42382314
This page is information, not medical advice. Discuss any trial with your doctor.