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

This Phase I/II clinical study will evaluate the safety and efficacy of valoctocogene roxaparvovec in patients with severe haemophilia A and inhibitors to FVIII. Part A of the study will involve subjects who have active inhibitors to FVIII, and Part B involving subjects with a prior history of inhibitors.