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ClinicalTrials.gov public records Last synced Oct 3, 2026, 4:13 PM EDT

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Showing 1–24 of 41 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Hemophilia B With Inhibitors Clear all
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 23, 2021 · Synced Oct 3, 2026, 4:13 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 Jul 1, 2026 · Synced Oct 3, 2026, 4:13 PM EDT
Terminated Phase 2 Interventional

A Study of SerpinPC in Participants with Hemophilia B (HemB) with Inhibitors

NCT05789537
View directory record Official record
Conditions
Hemophilia B with Inhibitor, Hemophilia B
Interventions
SerpinPC
Drug
Lead sponsor
ApcinteX Ltd
Industry
Eligibility
12 Years to 65 Years · Male only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
3
States / cities
Aurora, Colorado • Tampa, Florida • Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Oct 3, 2026, 4:13 PM EDT
Terminated Phase 3 Interventional Results available

Safety and Efficacy of FVIIa to Prevent Excessive Bleeding in Hemophilia Patients With Inhibitors Undergoing Major Surgery

NCT05695391
View directory record Official record
Conditions
Hemophilia
Interventions
Coagulation Factor VIIa (Recombinant)
Biological
Lead sponsor
Laboratoire français de Fractionnement et de Biotechnologies
Industry
Eligibility
12 Years to 65 Years · Male only
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
5
States / cities
Los Angeles, California • Atlanta, Georgia • New Orleans, Louisiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2026 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 1 Interventional Results available

Phase 1 Safety, Pharmacokinetics And Pharmacodynamics Study Of Recombinant Factor VIIa Variant (813d) In Adult Subjects With Hemophilia

NCT01439971
View directory record Official record
Conditions
Hemophilia A
Interventions
PF-05280602
Biological
Lead sponsor
Catalyst Biosciences
Industry
Eligibility
18 Years to 64 Years · Male only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
9
States / cities
San Diego, California • New Haven, Connecticut • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated May 12, 2017 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 4 Interventional

Trial of NovoSeven® in Haemophilia - Joint Bleeds

NCT00108797
View directory record Official record
Conditions
Congenital Bleeding Disorder, Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
Interventions
eptacog alfa (activated), Feiba VH
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
Up to 20 Years · Male only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
20
States / cities
Little Rock, Arkansas • Berkeley, California • Los Angeles, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2017 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 2 Interventional Results available

A Trial Evaluating the Efficacy and Safety of Prophylactic Administration of Concizumab in Haemophilia A and B Patients With Inhibitors

NCT03196284
View directory record Official record
Conditions
Congenital Bleeding Disorder, Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
Interventions
Concizumab, Eptacog alfa
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
18 Years and older · Male only
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
3
States / cities
Los Angeles, California • Indianapolis, Indiana • Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Oct 22, 2021 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of NNC 0078-0000-0007 in Patients With Congenital Haemophilia and Inhibitors

NCT01392547
View directory record Official record
Conditions
Congenital Bleeding Disorder, Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
Interventions
vatreptacog alfa (activated), eptacog alfa (activated)
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
12 Years and older · Male only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
14
States / cities
Tucson, Arizona • Los Angeles, California • Orange, California + 10 more
Source: ClinicalTrials.gov public record
Updated May 15, 2017 · Synced Oct 3, 2026, 4:13 PM EDT
Recruiting Phase 3 Interventional

SAFE Study: Safety of aPCC Following Emicizumab Prophylaxis

NCT04563520
View directory record Official record
Conditions
Hemophilia A
Interventions
Emicizumab, FEIBA, rFVIIa
Drug
Lead sponsor
Emory University
Other
Eligibility
6 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 2 Interventional

Study of Recombinant Porcine Factor VIII (FVIII) in Hemophilia and Inhibitors to FVIII

NCT00245245
View directory record Official record
Conditions
Hemophilia A
Interventions
recombinant porcine coagulation factor VIII (OBI-1)
Drug
Lead sponsor
Octagen Corporation
Industry
Eligibility
12 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Blue Bell, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 4, 2007 · Synced Oct 3, 2026, 4:13 PM EDT
Active, not recruiting Phase 3 Interventional Results available

Research Study to Look at How Well the Drug Concizumab Works in Your Body if You Have Haemophilia Without Inhibitors

NCT04082429
View directory record Official record
Conditions
Haemophilia A Without Inhibitors, Haemophilia B Without Inhibitors
Interventions
Concizumab
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
12 Years and older · Male only
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2028
U.S. locations
12
States / cities
Los Angeles, California • Orange, California • Augusta, Georgia + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 3, 2026, 4:13 PM EDT
Active, not recruiting Phase 3 Interventional Results available

Research Study to Look at How Well the Drug Concizumab Works in Your Body if You Have Haemophilia With Inhibitors

NCT04083781
View directory record Official record
Conditions
Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
Interventions
Concizumab
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
Male only
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
7
States / cities
Orange, California • Atlanta, Georgia • Indianapolis, Indiana + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 3 Interventional Results available

Study of the Efficacy and Safety PF-06741086 in Adult and Teenage Participants With Severe Hemophilia A or Moderately Severe to Severe Hemophilia B

NCT03938792
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
PF-06741086
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years to 74 Years · Male only
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
4
States / cities
Tampa, Florida • Iowa City, Iowa • New Hyde Park, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 2Phase 3 Interventional

A Phase 2/ 3 Trial to Evaluate the Efficacy and Safety of BAY86-6150

NCT01625390
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
BAY86-6150, eptacog alfa [activated]
Drug
Lead sponsor
Bayer
Industry
Eligibility
12 Years to 62 Years · Male only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
2
States / cities
Sacramento, California • Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 1, 2015 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 2 Interventional

Safety and Efficacy of 3 Different Doses of Long Acting Factor VII in Haemophilia A or B Patients With Inhibitors

NCT00951405
View directory record Official record
Conditions
Congenital Bleeding Disorder, Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
Interventions
activated recombinant human factor VII, long acting
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
12 Years to 65 Years · Male only
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
7
States / cities
Little Rock, Arkansas • Los Angeles, California • Orange, California + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2018 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 4 Interventional

Effect of Indinavir Plus Two Other Anti-HIV Drugs on Blood Clotting in HIV-Positive Males With Hemophilia

NCT00002386
View directory record Official record
Conditions
HIV Infections, Hemophilia A
Interventions
Indinavir sulfate, Lamivudine, Stavudine, Zidovudine, Zalcitabine, Didanosine
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
16 Years and older · Male only
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
7
States / cities
San Francisco, California • Washington D.C., District of Columbia • Atlanta, Georgia + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 3, 2026, 4:13 PM EDT
Terminated Phase 3 Interventional Results available

Study of Modified Recombinant Factor VIII (OBI-1) in Subjects With Congenital Hemophilia A

NCT01434511
View directory record Official record
Conditions
Hemophilia A
Interventions
OBI-1
Biological
Lead sponsor
Baxalta now part of Shire
Industry
Eligibility
6 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 14, 2021 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 2 Interventional

Efficacy of NovoSeven® in Bleeding Prophylaxis in Hemophilia

NCT00108758
View directory record Official record
Conditions
Congenital Bleeding Disorder, Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
Interventions
activated recombinant human factor VII
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
2 Years and older · Male only
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
13
States / cities
Berkeley, California • Los Angeles, California • Chicago, Illinois + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2017 · Synced Oct 3, 2026, 4:13 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 17, 2016 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 3 Interventional Results available

A Phase III Study on the Safety, Pharmacokinetics and Efficacy of Coagulation Factor VIIa

NCT02448680
View directory record Official record
Conditions
Hemophilia A With Inhibitors, Hemophilia B With Inhibitors
Interventions
Coagulation FVIIa (Recombinant)
Biological
Lead sponsor
Laboratoire français de Fractionnement et de Biotechnologies
Industry
Eligibility
Up to 11 Years · Male only
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
3
States / cities
Aurora, Colorado • Oklahoma City, Oklahoma • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 25, 2022 · Synced Oct 3, 2026, 4:13 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 17, 2021 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 1 Interventional

Prediction of the Efficacy of Activated Recombinant Human Factor VII in Adult Congenital Haemophilia A or B Patients With Inhibitors by Use of Thromboelastography

NCT01561924
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
16 Years and older · Male only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
4
States / cities
Berkeley, California • Los Angeles, California • Iowa City, Iowa + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 23, 2016 · Synced Oct 3, 2026, 4:13 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety Study of Prophylactic Versus On-Demand Treatment With Feiba NF in Subjects With Hemophilia A or B and a High Titer Inhibitor

NCT00851721
View directory record Official record
Conditions
Hemophilia A or B With Inhibitors, Hemophilia A, Hemophilia B
Interventions
Factor VIII Inhibitor Bypassing Activity (nanofiltered, vapor heat-treated)
Biological
Lead sponsor
Baxalta now part of Shire
Industry
Eligibility
4 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
2
States / cities
Chicago, Illinois • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 19, 2021 · Synced Oct 3, 2026, 4:13 PM EDT
Recruiting Phase 3 Interventional

A Clinical Trial of Study Medicine (Marstacimab) in Pediatric Patients With Hemophilia A or Hemophilia B

NCT05611801
View directory record Official record
Conditions
Hemophilia A, Hemophilia B
Interventions
marstacimab
Drug
Lead sponsor
Pfizer
Industry
Eligibility
1 Year to 17 Years · Male only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 3, 2026, 4:13 PM EDT