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A Study to Evaluate the Efficacy and Safety of Factor VIII Gene Therapy With PF-07055480 in Adult Males With Moderately Severe to Severe Hemophilia A

Phase 1
Conditions
hemophilia A
MedDRA version: 20.0Level: LLTClassification code 10060613Term: Hemophilia A (Factor VIII)System Organ Class: 100000004850
Therapeutic area: Diseases [C] - Blood and lymphatic diseases [C15]
Registration Number
EUCTR2019-004451-37-DE
Lead Sponsor
Pfizer Inc., 235 East 42nd Street, New York, NY 10017
Brief Summary

Not available

Detailed Description

Not available

Recruitment & Eligibility

Status
ot Recruiting
Sex
Male
Target Recruitment
63
Inclusion Criteria

• Males who have been followed on routine Factor VIII prophylaxis therapy in 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

Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range 63
F.1.3 Elderly (>=65 years) no
F.1.3.1 Number of subjects for this age range

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
• 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 either Cluster of Differentiation 4 positive (CD4+) cell count =200 mm3 or viral load >20 copies/mL

Study & Design

Study Type
Interventional clinical trial of medicinal product
Study Design
Not specified
Primary Outcome Measures
NameTimeMethod
Secondary Outcome Measures
NameTimeMethod
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