NCT04370054Active, not recruitingPhase 3
Study to Evaluate the Efficacy and Safety of PF-07055480 / Giroctocogene Fitelparvovec Gene Therapy in Moderately Severe to Severe Hemophilia A Adults
Phase 3, Open-Label, Single-Arm Study to Evaluate the Efficacy and Safety of PF-07055480 (Recombinant AAV2/6 Human Factor VIII Gene Therapy) in Adult Male Participants With Moderately Severe to Severe Hemophilia A(FVIII:C≤1%)
Source: ClinicalTrials.gov · Last updated 19 Aug 2026
Brief summary (registry, in English)
C3731003 is a pivotal Phase 3 study to evaluate the clinical efficacy and safety of a single IV infusion of PF-07055480 / giroctocogene fitelparvovec (Recombinant AAV2/6 Human Factor VIII Gene Therapy) in adult male participants with moderately severe or severe hemophilia A (FVIII:C≤1%) for the study duration of 5 years. The study will enroll eligible participants who have been followed on routine prophylaxis with FVIII products in the Lead-In study C0371004.
- Status (registry)
- Active, not recruiting
- Phase (registry)
- Phase 3
- Study type
- Interventional
- Enrollment
- 77 (actual)
- First submitted
- 21 Apr 2020
- Start date
- 18 Aug 2020
- Primary completion date
- 17 Jun 2024
- Lead sponsor
- Pfizer
- Diseases
- Haemophilia
- NCT number
- NCT04370054
- EU CT number
- 2024-512075-12-00
- EudraCT number
- 2019-004451-37
What you commit to
- Study type: Interventional · Phase 3
- Participants enrolled: 77
- From 18 Aug 2020 to the primary completion date, 17 Jun 2024
- 41 sites in 16 countries
- 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.
Criteria the registry did not label
- Main inclusion Criteria
- Males who have been followed on routine Factor VIII prophylaxis therapy during the lead-in study (C0371004) and have \> = 150 documented exposure days to a Factor VIII protein product
- Moderately severe to severe hemophilia A (Factor VIII activity \< =1%)
- Suspension of FVIII prophylaxis therapy post study drug infusion
- Main exclusion Criteria
- Anti-AAV6 neutralizing antibodies
- History of inhibitor to Factor VIII
- Laboratory values at screening visit that are abnormal or outside acceptable study limits
- Significant and/or unstable liver disease, biliary disease, significant liver fibrosis
- Conditions associated with increased thromboembolic risk such as inherited or acquired thrombophilia, or a history of thrombotic events
- Planned surgical procedure requiring Factor VIII surgical prophylactic factor treatment 12 months from screening visit
- Active hepatitis B or C
- Serological evidence of human immunodeficiency virus HIV-1 or HIV-2 with Cluster of Differentiation 4 positive (CD4+) cell count ≤200 mm3 and/or viral load \>20 copies/mL
Age in the registry: 18 years to 64 years · Sex: Male · Does not accept healthy volunteers
Sites (41)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| The Alfred Hospital Coordinator of this site? Confirm its status | Melbourne | Australia | Unknown status |
| Universidade Estadual de Campina Coordinator of this site? Confirm its status | Campina | Brazil | Unknown status |
| Juravinski Hospital - Hamilton Health Sciences Coordinator of this site? Confirm its status | Hamilton | Canada | Unknown status |
| McMaster University Medical Centre, Hamilton Health Sciences Coordinator of this site? Confirm its status | Hamilton | Canada | Unknown status |
| Hamilton Health Sciences Corporation Coordinator of this site? Confirm its status | Hamilton | Canada | Unknown status |
| Vivantes MVZ GmbH Coordinator of this site? Confirm its status | Berlin | Germany | Active, not recruiting |
| Hospital Universitario Rio Hortega Coordinator of this site? Confirm its status | Valladolid | Spain | Active, not recruiting |
| Hopital Necker Enfants Malades Coordinator of this site? Confirm its status | Paris | France | Active, not recruiting |
| Guy's and St Thomas' NHS Foundation Trust Coordinator of this site? Confirm its status | London | United Kingdom | Unknown status |
| Hippokration Hospital Coordinator of this site? Confirm its status | Athens | Greece | Active, not recruiting |
| Azienda Ospedaliero Universitaria Careggi SODc Malattie Emorragiche e della Coagulazione Coordinator of this site? Confirm its status | Florence | Italy | Unknown status |
| Dip. di Medicina Clinica e Chirurgia, Università degli Studi di Napoli Federico II - UOC di Medicina Coordinator of this site? Confirm its status | Naples | Italy | Unknown status |
| Università degli studi di Roma "La Sapienza"- Policlinico Umberto I Coordinator of this site? Confirm its status | Roma | Italy | Unknown status |
| Saitama Medical University Hospital Coordinator of this site? Confirm its status | Iruma-gun | Japan | Unknown status |
| Nagoya University Hospital - Transfusion Medicine Coordinator of this site? Confirm its status | Nagoya | Japan | Unknown status |
| Kyung Hee University Hospital at Gangdong Coordinator of this site? Confirm its status | Seoul | South Korea | Unknown status |
| King Faisal Specialist Hospital & Research Center Coordinator of this site? Confirm its status | Riyadh | Saudi Arabia | Unknown status |
| University Of Skane Coordinator of this site? Confirm its status | Malmo | Sweden | Active, not recruiting |
| National Taiwan University Hospital Coordinator of this site? Confirm its status | Taipei | Taiwan | Unknown status |
| NOW Physical Therapy Coordinator of this site? Confirm its status | Mountain View | United States | Unknown status |
| Regents of The University of California Coordinator of this site? Confirm its status | Oakland | United States | Unknown status |
| Clinical and Translational Research Unit (CTRU) Coordinator of this site? Confirm its status | Palo Alto | United States | Unknown status |
| Lucile Packard Childrens Hospital Coordinator of this site? Confirm its status | Palo Alto | United States | Unknown status |
| The Board of Trustees of the Leland Stanford Junior University Coordinator of this site? Confirm its status | Redwood City | United States | Unknown status |
| Imaging Clinic at Stanford Medicine Outpatient Center in Redwood City Coordinator of this site? Confirm its status | Redwood City | United States | Unknown status |
| UCSF Outpatient Radiology. Coordinator of this site? Confirm its status | San Francisco | United States | Unknown status |
| UCSF Outpatient Radiology (alternate location) Coordinator of this site? Confirm its status | San Francisco | United States | Unknown status |
| University of California, San Francisco - Moffitt/Long Inpatient Hematology Coordinator of this site? Confirm its status | San Francisco | United States | Unknown status |
| UCSF IDS Pharmacy Coordinator of this site? Confirm its status | San Francisco | United States | Unknown status |
| UCSF lnvestigational Drug Service Coordinator of this site? Confirm its status | San Francisco | United States | Unknown status |
| University of California, San Francisco - Outpatient Hematology Clinic Coordinator of this site? Confirm its status | San Francisco | United States | Unknown status |
| University of California, San Francisco - Clinical Research Center Coordinator of this site? Confirm its status | San Francisco | United States | Unknown status |
| Access Sourcecorp Deliverex (off-site storage) Coordinator of this site? Confirm its status | San Jose | United States | Unknown status |
| University of Washington Medical Center - Translational Research Unit (TRU) Coordinator of this site? Confirm its status | Seattle | United States | Unknown status |
| Washington Institute for Coagulation Coordinator of this site? Confirm its status | Seattle | United States | Unknown status |
| Stanford Health Care Coordinator of this site? Confirm its status | Stanford | United States | Unknown status |
| Stanford Health Care (hospital and IDS pharmacy) Coordinator of this site? Confirm its status | Stanford | United States | Unknown status |
| Adana Acibadem Hospital Coordinator of this site? Confirm its status | Adana | Turkey (Türkiye) | Unknown status |
| Gaziantep University Sahinbey Research and Training Hospital Coordinator of this site? Confirm its status | Gaziantep | Turkey (Türkiye) | Unknown status |
| Ege University Medical Faculty Coordinator of this site? Confirm its status | Izmir | Turkey (Türkiye) | Unknown status |
| Ege University Medical Faculty, Pediatric Hematology Coordinator of this site? Confirm its status | Izmir | Turkey (Türkiye) | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.