NGGT-003

This is an early phase 1, open-label, single-center, dose-escalation pilot trial to evaluate the safety and efficacy of an intravenous infusion of NGGT003 in hemophilia A patients. NGGT003 uses adeno-associated virus (AAV) as a vector, carrying a liver specific promoter and codon optimized human FVIII gene B domain deletion mutant (hFVIII BDD), and expresses human FVIII protein in the liver through intravenous injection.