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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Haemophilia B Clear all
Completed No phase listed Observational

ATHN 8: Previously Untreated Patients (PUPs) Matter Study

NCT03818529
View directory record Official record
Conditions
Hemophilia, Hemophilia A, Hemophilia B, Hemophilia A With Inhibitor, Hemophilia B With Inhibitor, Haemophilia B Without Inhibitor, Haemophilia A Without Inhibitor, Haemophilia
Interventions
Not listed
Lead sponsor
American Thrombosis and Hemostasis Network
Network
Eligibility
0 Years to 13 Years
Enrollment
237 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
27
States / cities
Phoenix, Arizona • Madera, California • San Diego, California + 24 more
Source: ClinicalTrials.gov public record
Updated Jan 31, 2023 · Synced Jul 21, 2026, 12:06 PM EDT
Completed Phase 3 Interventional

Study to Establish Bioequivalence of ReFacto AF (BDDrFVIII) With Advate (FLrFVIII) in Hemophilia A

NCT00141843
View directory record Official record
Conditions
Hemophilia A
Interventions
ReFacto AF, B-Domain deleted Recombinant Factor VIII, BDDrFVIII
Genetic
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
12 Years and older · Male only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
21
States / cities
Phoenix, Arizona • Sacramento, California • San Diego, California + 18 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2008 · Synced Jul 21, 2026, 12:06 PM EDT
Completed Not applicable Interventional

Correlation Between Vitamin D Status and Bone Mineral Density in Patients With Hemophilia

NCT01090206
View directory record Official record
Conditions
Hemophilia A, Hemophilia B, Vitamin D Deficiency
Interventions
Vitamin D and calcium
Dietary Supplement
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
2 Years to 21 Years · Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 28, 2016 · Synced Jul 21, 2026, 12:06 PM EDT
Recruiting Phase 4 Interventional

SEVENFACT® for Bleeding Events in Hemophilia With Inhibitors

NCT04647227
View directory record Official record
Conditions
Hemophilia A With Inhibitor, Hemophilia B With Inhibitor
Interventions
coagulation factor VIIa [recombinant]-jncw
Drug
Lead sponsor
American Thrombosis and Hemostasis Network
Network
Eligibility
12 Years to 100 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
21
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 17 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Jul 21, 2026, 12:06 PM EDT
Completed Phase 3 Interventional Results available

A Study of Fitusiran (ALN-AT3SC) in Severe Hemophilia A and B Patients With Inhibitors

NCT03417102
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
fitusiran, Bypassing agents
Drug
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
12 Years and older · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
12
States / cities
Phoenix, Arizona • Los Angeles, California • Orange, California + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2022 · Synced Jul 21, 2026, 12:06 PM EDT
Completed Phase 1 Interventional

Phase I/IIa Study of FIXFc in Hemophilia B Patients

NCT00716716
View directory record Official record
Conditions
Hemophilia B
Interventions
rFIXFc
Drug
Lead sponsor
Bioverativ Therapeutics Inc.
Industry
Eligibility
18 Years and older · Male only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
6
States / cities
Chicago, Illinois • Indianapolis, Indiana • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 18, 2020 · Synced Jul 21, 2026, 12:06 PM EDT
Completed Phase 3 Interventional Results available

Study of Octaplex (Human Prothrombin Complex Concentrate) and Fresh Frozen Plasma in Patients Under Vitamin K Therapy Antagonist Needing Urgent Surgery or Invasive Procedures

NCT00618098
View directory record Official record
Conditions
Reversal of Anticoagulant Treatment
Interventions
Octaplex (human prothrombin complex concentrate), Fresh frozen plasma
Biological
Lead sponsor
Octapharma
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 30, 2023 · Synced Jul 21, 2026, 12:06 PM EDT
Completed No phase listed Observational

A Study Following People With Haemophilia A and B, With or Without Inhibitors, When on Usual Treatment (Explorer™6)

NCT03741881
View directory record Official record
Conditions
Haemophilia A, Haemophilia A With Inhibitors, Haemophilia B, Haemophilia B With Inhibitors
Interventions
No treatment given
Other
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
12 Years and older · Male only
Enrollment
231 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
29
States / cities
Los Angeles, California • Sacramento, California • Aurora, Colorado + 24 more
Source: ClinicalTrials.gov public record
Updated Nov 22, 2021 · Synced Jul 21, 2026, 12:06 PM EDT
Recruiting Phase 3 Interventional

A Study to Investigate the Efficacy and Safety of Fitusiran Prophylaxis in Male Participants Aged 1 to Less Than 12 Years With Hemophilia A or B

NCT07285460
View directory record Official record
Conditions
Hemophilia
Interventions
Fitusiran, Clotting factor concentrates (CFC) or bypassing agents (BPA), Antithrombin concentrate (ATIIIC)
Drug · Biological
Lead sponsor
Sanofi
Industry
Eligibility
1 Year to 11 Years · Male only
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
5
States / cities
Los Angeles, California • Orange, California • Las Vegas, Nevada + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2026 · Synced Jul 21, 2026, 12:06 PM EDT
Not yet recruiting No phase listed Observational

Liver Biopsy Following Gene Therapy For Hemophilia

NCT05932914
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
Liver Biopsy
Procedure
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
18 Years to 80 Years · Male only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Jul 21, 2026, 12:06 PM EDT
Completed No phase listed Observational

Observational Patient Diary Study of Treatment Doses for Patients With Haemophilia With Inhibitors to Factors VIII and IX

NCT00710619
View directory record Official record
Conditions
Congenital Bleeding Disorder, Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
Interventions
activated recombinant human factor VII, Feiba VH
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
Male only
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Plainsboro, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 16, 2016 · Synced Jul 21, 2026, 12:06 PM EDT
Completed No phase listed Observational

A Long-term Assessment of Physical Activity, Range of Motion, and Functional Status Following Elective Orthopedic Surgery in Hemophilia Patients With Inhibitors

NCT01830712
View directory record Official record
Conditions
Congenital Bleeding Disorder, Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
Interventions
eptacog alfa (activated)
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
5 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 28, 2023 · Synced Jul 21, 2026, 12:06 PM EDT
Recruiting Phase 3 Interventional

Open-Label Extension Study of Marstacimab in Hemophilia Participants With or Without Inhibitors

NCT05145127
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
PF-06741086
Drug
Lead sponsor
Pfizer
Industry
Eligibility
1 Year to 74 Years · Male only
Enrollment
245 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2030
U.S. locations
4
States / cities
Iowa City, Iowa • New Hyde Park, New York • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Jul 21, 2026, 12:06 PM EDT
Completed Phase 3 Interventional Results available

A Study of Fitusiran (ALN-AT3SC) in Severe Hemophilia A and B Patients Without Inhibitors

NCT03417245
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
fitusiran, factor concentrates
Drug
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
12 Years and older · Male only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
8
States / cities
Little Rock, Arkansas • Gainesville, Florida • Tampa, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2022 · Synced Jul 21, 2026, 12:06 PM EDT
Completed Phase 3 Interventional Results available

Study of Recombinant Coagulation Factor IX Fc Fusion Protein, BIIB029, in Previously Treated Pediatric Participants With Hemophilia B

NCT01440946
View directory record Official record
Conditions
Hemophilia B
Interventions
rFIXFc, FIX
Drug
Lead sponsor
Bioverativ Therapeutics Inc.
Industry
Eligibility
Up to 11 Years · Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
7
States / cities
Phoenix, Arizona • Sacramento, California • Atlanta, Georgia + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 18, 2020 · Synced Jul 21, 2026, 12:06 PM EDT
Terminated Phase 1Phase 2 Interventional

Phase 1/2 Dose Confirmation Study of FLT180a in Hemophilia B

NCT05164471
View directory record Official record
Conditions
Hemophilia B
Interventions
verbrinacogene setparvovec
Genetic
Lead sponsor
Spur Therapeutics
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
3
States / cities
Los Angeles, California • Tampa, Florida • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 19, 2023 · Synced Jul 21, 2026, 12:06 PM EDT
Completed Phase 2 Interventional Results available

PF-06741086 Multiple Dose Study in Severe Hemophilia

NCT02974855
View directory record Official record
Conditions
Hemophilia A or B
Interventions
PF-06741086
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 64 Years · Male only
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
4
States / cities
Aurora, Colorado • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 3, 2019 · Synced Jul 21, 2026, 12:06 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Safety and Dose Finding Study of DTX101 (AAVrh10FIX) in Adults With Moderate/Severe to Severe Hemophilia B

NCT02618915
View directory record Official record
Conditions
Hemophilia B
Interventions
DTX101
Genetic
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
18 Years and older · Male only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
6
States / cities
Little Rock, Arkansas • Los Angeles, California • Gainesville, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2018 · Synced Jul 21, 2026, 12:06 PM EDT
Completed No phase listed Observational

Ultrasonography in Hemophilic Joint Disease and Serum Markers

NCT02634918
View directory record Official record
Conditions
Hemophilia A, Hemophilia B, Hemarthroses
Interventions
ultrasound
Other
Lead sponsor
Northwell Health
Other
Eligibility
6 Months to 18 Years · Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Feb 12, 2020 · Synced Jul 21, 2026, 12:06 PM EDT
Completed No phase listed Observational

Awareness, Care, and Treatment In Obesity Management of Patients With Hemophilia (ACTION) to Inform Hemophilia Obesity Patient Empowerment (HOPE)

NCT03430154
View directory record Official record
Conditions
Haemophilia A, Haemophilia B, Obesity
Interventions
No treatment given
Other
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
18 Years and older
Enrollment
317 participants
Timeline
2017 – 2018
U.S. locations
1
States / cities
Plainsboro, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 4, 2018 · Synced Jul 21, 2026, 12:06 PM EDT
Terminated Phase 3 Interventional

Study of Coagulation Factor VIIa Marzeptacog Alfa (Activated) in Subjects With Hemophilia A or B

NCT04489537
View directory record Official record
Conditions
Hemophilia A With Inhibitor, Hemophilia B With Inhibitor
Interventions
MarzAA
Biological
Lead sponsor
Catalyst Biosciences
Industry
Eligibility
12 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
2
States / cities
Phoenix, Arizona • Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Dec 16, 2021 · Synced Jul 21, 2026, 12:06 PM EDT
Terminated No phase listed Observational

The Hemophilia Ultrasound Project

NCT02807753
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
Ankle and Knee Ultrasound Joint Assessment, Ankle and Knee Magnetic Resonance Imaging
Other
Lead sponsor
University of Miami
Other
Eligibility
Up to 30 Months
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
4
States / cities
Gainesville, Florida • Miami, Florida • Lexington, Kentucky + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2021 · Synced Jul 21, 2026, 12:06 PM EDT
Completed No phase listed Observational

Females With Severe or Moderate Hemophilia A or B: A Multi-Center Study

NCT00936845
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
1 Month and older · Female only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
18
States / cities
Duarte, California • Aurora, Colorado • Washington D.C., District of Columbia + 15 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2012 · Synced Jul 21, 2026, 12:06 PM EDT
Recruiting No phase listed Observational

ATHN Transcends: A Natural History Study of Non-Neoplastic Hematologic Disorders

NCT04398628
View directory record Official record
Conditions
Hematologic Disorder, Bleeding Disorder, Connective Tissue Disorder, Hemophilia, Thrombosis, Von Willebrand Diseases, Thrombophilia, Rare Bleeding Disorder, Platelet Disorder, Factor IX Deficiency, Factor VIII Deficiency, Thalassemia, Sickle Cell Disease
Interventions
Not listed
Lead sponsor
American Thrombosis and Hemostasis Network
Network
Eligibility
Not listed
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2035
U.S. locations
71
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 59 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Jul 21, 2026, 12:06 PM EDT