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Showing 1–24 of 28 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hemophilia A With Inhibitor Clear all
Not yet recruiting Phase 4 Interventional

Understanding Treatment Outcomes and Immunologic Mechanisms in Altuviiio Immune Tolerance Induction

NCT07158606
View directory record Official record
Conditions
Hemophilia A With Inhibitor
Interventions
efanesoctacog alpha, Emicizumab
Drug
Lead sponsor
Versiti Blood Health
Other
Eligibility
0 Years to 17 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2032
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 7, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Not listed Phase 4 Interventional

Preventing Inhibitor Recurrence Indefinitely

NCT04621916
View directory record Official record
Conditions
Hemophilia A, Immune Tolerance
Interventions
FVIII, Emicizumab
Drug
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
0 Years to 12 Years · Male only
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Jul 21, 2026, 9:24 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 Jun 30, 2015 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Safety, Efficacy, Pharmacokinetics and Pharmacodynamics of Emicizumab in Participants With Mild or Moderate Hemophilia A Without FVIII Inhibitors

NCT04158648
View directory record Official record
Conditions
Mild Hereditary Factor VIII Deficiency Disease Without Inhibitor, Moderate Hereditary Factor VIII Deficiency Disease Without Inhibitor, Hemophilia A
Interventions
Emicizumab
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
Not listed
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
5
States / cities
Los Angeles, California • Atlanta, Georgia • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Terminated Phase 4 Interventional

Assessment of the Risk of Inhibitor Formation in Previously Treated Patients With Severe Hemophilia A

NCT00621673
View directory record Official record
Conditions
Hemophilia A
Interventions
Kogenate (BAY 14-2222)
Drug
Lead sponsor
Bayer
Industry
Eligibility
12 Years to 60 Years · Male only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
2
States / cities
Detroit, Michigan • Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Dec 17, 2014 · Synced Jul 21, 2026, 9:24 PM EDT
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, 9:24 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, 9:24 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, 9:24 PM EDT
Terminated Phase 4 Interventional Results available

INdividualized ITI Based on Fviii(ATE) Protection by VWF

NCT03204539
View directory record Official record
Conditions
Hemophilia A With Inhibitor, Hemophilia A
Interventions
Wilate
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
Male only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
3
States / cities
Sacramento, California • San Diego, California • New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 28, 2020 · Synced Jul 21, 2026, 9:24 PM EDT
Terminated Phase 3 Interventional Results available

The Hemophilia Inhibitor Prevention Trial

NCT04303559
View directory record Official record
Conditions
Hemophilia A Without Inhibitor
Interventions
Eloctate Injectable Product, Emicizumab Injection [Hemlibra]
Drug
Lead sponsor
Margaret Ragni
Other
Eligibility
4 Months to 4 Years · Male only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
3
States / cities
Little Rock, Arkansas • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 10, 2023 · Synced Jul 21, 2026, 9:24 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, 9:24 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, 9:24 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Reversibility of Apixaban Anticoagulation With the Four Factor Prothrombin Complex Concentrate Kcentra

NCT02270918
View directory record Official record
Conditions
Thrombosis
Interventions
Kcentra, Apixaban, Placebo
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 6, 2016 · Synced Jul 21, 2026, 9:24 PM EDT
Completed No phase listed Observational

Hemophilia Inhibitor Previously Untreated Patient Study

NCT01652027
View directory record Official record
Conditions
Hemophilia A
Interventions
FVIII concentrate
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
Not listed
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2020
U.S. locations
13
States / cities
Atlanta, Georgia • Indianapolis, Indiana • Lexington, Kentucky + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 9, 2020 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Phase 3 Interventional

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
189 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 Jun 9, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Terminated Phase 3 Interventional Results available

The Hemophilia Inhibitor Eradication Trial

NCT04303572
View directory record Official record
Conditions
Hemophilia A With Inhibitor
Interventions
Eloctate ITI, Emicizumab
Drug
Lead sponsor
Margaret Ragni
Other
Eligibility
Male only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 20, 2023 · Synced Jul 21, 2026, 9:24 PM EDT
Recruiting No phase listed Observational

Treatment of Hemophilia A Patients With FVIII Inhibitors

NCT04023019
View directory record Official record
Conditions
Hemophilia A
Interventions
Nuwiq, Octanate, Wilate, Emicizumab, Recombinant factor VIIa (rFVIIa), Activated prothrombin complex concentrate (aPCC)
Biological
Lead sponsor
Emory University
Other
Eligibility
Male only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2029
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Completed No phase listed Observational

Inhibitor Development in Patients With Hemophilia A Undergoing Surgery

NCT01571934
View directory record Official record
Conditions
Hemophilia A
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
7
States / cities
Aurora, Colorado • Atlanta, Georgia • Indianapolis, Indiana + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 25, 2017 · Synced Jul 21, 2026, 9:24 PM EDT
Completed No phase listed Observational

ATHN 7: Hemophilia Natural History Study

NCT03619863
View directory record Official record
Conditions
Hemophilia A With Inhibitor, Haemophilia A Without Inhibitor, Hemophilia B With Inhibitor, Haemophilia B Without Inhibitor
Interventions
Not listed
Lead sponsor
American Thrombosis and Hemostasis Network
Network
Eligibility
Not listed
Enrollment
395 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
29
States / cities
Phoenix, Arizona • Los Angeles, California • San Diego, California + 23 more
Source: ClinicalTrials.gov public record
Updated Feb 11, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Not applicable Interventional

Rescue Immunotolerance Study in Induction of Immune Tolerance (ITI)-Experienced Patients (RES.I.S.T. Experienced)

NCT01051076
View directory record Official record
Conditions
Severe Hemophilia A
Interventions
VWF/FVIII concentrates
Drug
Lead sponsor
City of Hope Medical Center
Other
Eligibility
Male only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2020
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Aug 22, 2021 · Synced Jul 21, 2026, 9:24 PM EDT
Withdrawn Phase 4 Interventional

Study Evaluating Inhibitor Specificity in Hemophilia A

NCT00151385
View directory record Official record
Conditions
Hemophilia A
Interventions
single blood draw
Procedure
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
7
States / cities
Atlanta, Georgia • Detroit, Michigan • New Hyde Park, New York + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2012 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Phase 1Phase 2 Interventional

Safety, Tolerability, and Efficacy Study of Valoctocogene Roxaparvovec in Hemophilia A With Active or Prior Inhibitors

NCT04684940
View directory record Official record
Conditions
Hemophilia A With Inhibitor, Hemophilia A With Anti Factor VIII
Interventions
Valoctocogene roxaparvovec
Biological
Lead sponsor
BioMarin Pharmaceutical
Industry
Eligibility
18 Years and older · Male only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Jul 21, 2026, 9:24 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 3, 2007 · Synced Jul 21, 2026, 9:24 PM EDT
Active, not recruiting Phase 4 Interventional

A Study to Evaluate the Safest Dose Range for FEIBA in Hemophilia A Patients With Inhibitors on Emicizumab

NCT04205175
View directory record Official record
Conditions
Hemophilia A With Inhibitor
Interventions
Feiba
Drug
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 8, 2022 · Synced Jul 21, 2026, 9:24 PM EDT