Evaluating the safety and effectiveness of gene therapies for Hemophilia A and B
Official title: A PHASE 3, NON-INVESTIGATIONAL PRODUCT, MULTI COUNTRY COHORT STUDY TO DESCRIBE THE LONG-TERM SAFETY AND EFFECTIVENESS OF A PRIOR SINGLE-DOSE TREATMENT WITH INVESTIGATIVE GIROCTOCOGENE FITELPARVOVEC OR FIDANACOGENE ELAPARVOVEC IN PARTICIPANTS WITH HEMOPHILIA A OR HEMOPHILIA B, RESPECTIVELY
Run by Pfizer · NCT05568719 · Data updated 2026-11-12
This study is testing two gene therapies for Hemophilia A and B to see how safe and effective they are for patients who have already taken part in previous trials.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | Men only |
| Enrollment | 173 (estimated) |
| Sponsor | Pfizer Industry-sponsored |
| Locations | 39 sites (Rancho Cordova, California and 38 other locations) |
| Status | Recruiting |
| Started | December 28, 2022 |
| Main results expected | February 25, 2040 |
| Study ends | February 25, 2040 |
| Registry record updated | October 7, 2026 |
| Trial ID | NCT05568719 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are patients with Hemophilia A or B who have previously received investigational gene therapies in Pfizer-sponsored studies.
✕Probably not a fit
Patients who have not participated in prior Pfizer-sponsored studies involving these gene therapies 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 study investigates the long-term safety and efficacy of two gene therapies, giroctocogene fitelparvovec for Hemophilia A and fidanacogene elaparvovec for Hemophilia B, in patients who have previously participated in Pfizer-sponsored clinical trials. Participants will undergo regular assessments based on standard care protocols to monitor their health outcomes. The study aims to gather data on the integration of the adeno-associated virus vector in the liver and its impact on bleeding episodes.
Why it matters
Potential benefit: If successful, this study could significantly improve the management of Hemophilia A and B, potentially reducing bleeding episodes and enhancing patients' quality of life.
How similar studies have gone: Other studies involving gene therapies for hemophilia have shown promising results, indicating a potential for success in this approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: -Only participants who received investigational giroctocogene fitelparvovec or fidanacogene eleparvovec and were enrolled in a Pfizer-sponsored study (C0371002, C0371003, C0371005, C3731001, C3731003) are eligible. Exclusion Criteria: -None
Where it's running
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The Regents of the University of California||UC Davis Health
Rancho Cordova, California, United States Recruiting -
UC Davis Health
Sacramento, California, United States Recruiting -
UC Davis Ambulatory Care Clinic
Sacramento, California, United States Recruiting -
UC Davis Hemophilia Treatment Center
Sacramento, California, United States Recruiting -
UC Davis Medical Center
Sacramento, California, United States Recruiting -
UCSF Outpatient Hematology Clinic
San Francisco, California, United States Recruiting
Show 33 more locations
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USF Health Morsani Center For Advanced Healthcare
Tampa, Florida, United States Recruiting -
The University of South Florida Board of Trustees
Tampa, Florida, United States Recruiting -
Innovative Hematology, Inc.
Indianapolis, Indiana, United States Recruiting -
Cornell University||Joan & Sanford I. Weill Medical College
New York, New York, United States Recruiting -
Weill Cornell Medical College-New York Presbyterian Hospital
New York, New York, United States Recruiting -
The Childrens Hospital of Philadelphia Division of Hematology
Philadelphia, Pennsylvania, United States Recruiting -
The Childrens Hospital of Philadelphia Division of Hematology
Philadelphia, Pennsylvania, United States Recruiting -
Washington Institute for Coagulation
Seattle, Washington, United States Recruiting -
Royal Prince Alfred Hospital
Camperdown, New South Wales, Australia Recruiting -
Sydney Local Health District (RPAH Zone)
Camperdown, New South Wales, Australia Recruiting -
The Alfred Hospital
Melbourne, Victoria, Australia Recruiting -
Unity Health Toronto, St. Michael's Hospital
Toronto, Ontario, Canada Recruiting -
Hospices Civils de Lyon - Hopital Louis Pradel
Bron, Rhône, France Recruiting -
Hôpital Universitaire Necker Enfants Malades
Paris, France Recruiting -
Universitätsklinikum Bonn
Bonn, North Rhine-Westphalia, Germany Recruiting -
General Hospital of Athens Laiko
Athens, Greece Recruiting -
Nagoya University Hospital
Nagoya, Aichi-ken, Japan Recruiting -
Sapporo Tokushukai Hospital
Sapporo, Hokkaido, Japan Recruiting -
Saitama Medical University Hospital
Iruma-gun, Saitama, Japan Recruiting -
Kyung Hee University Hospital at Gangdong
Seoul, South Korea Recruiting -
Hospital Universitario Rio Hortega
Valladolid, Spain Recruiting -
Skåne University Hospital
Malmö, Sweden Recruiting -
Changhua Christian Hospital
Changhua, Taiwan Recruiting -
Chung-Ho Memorial Hospital, Kaohsiung Medical University
Kaohsiung City, Taiwan Recruiting -
Taichung Veterans General Hospital
Taichung, Taiwan Recruiting -
National Taiwan University Hospital
Taipei, Taiwan Recruiting -
Ege Universitesi Hastanesi
Izmir, İ̇zmir, Turkey (Türkiye) Recruiting -
Acibadem Adana Hospital
Adana, Turkey (Türkiye) Recruiting -
Gaziantep Universitesi Sahinbey Arastirma ve Uygulama Hastanesi
Gaziantep, Turkey (Türkiye) Recruiting -
İstanbul Üniversitesi Onkoloji Enstitüsü
Istanbul, Turkey (Türkiye) Recruiting -
Mississippi Center For Advanced Medicine
Madison, Mississippi, United States Terminated -
King Faisal Specialist Hospital and Research Center
Riyadh, Saudi Arabia Not yet recruiting -
Chung Shan Medical University Hospital
Taichung, Taiwan Not yet recruiting
Study contacts
- Study coordinator: Pfizer CT.gov Call Center
- Email: ClinicalTrials.gov_Inquiries@pfizer.com
- Phone: 1-800-718-1021
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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SR604: a new treatment tested in adults with Hemophilia A/B or congenital Factor VII deficiency
This study tests a single and multiple doses of SR604 to see if it is safe and effective for adults with Hemophilia A or B, with or without inhibitors, and for those with congenital Factor VII deficiency.
-
ATHNdataset registry for people with bleeding and clotting disorders
This registry collects health, treatment, and patient-reported information from people with bleeding and clotting disorders seen at ATHN-affiliated centers to help improve care and outcomes.
-
Is synovial proliferation in haemophilia joints active or inactive?
This project will test whether ultrasound, MRI and elastography can tell if subclinical synovial proliferation in people with severe haemophilia is currently active so clinicians can treat earlier.
-
Observational study of blood clotting and bleeding disorders in Chinese patients
This study looks at blood clotting and bleeding problems in Chinese patients to see how common they are and what factors might affect them.
-
Evaluating the safety and effects of SR604 in healthy individuals and those with Hemophilia A or B
This study is testing a new drug called SR604 to see if it's safe and effective for healthy people and those with Hemophilia A or B.
-
Non-invasive prenatal diagnosis for single gene disorders
This study is testing a new way to safely diagnose single-gene disorders in unborn babies using a simple blood test from the mother, starting as early as 9 weeks into the pregnancy.
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.