Factor-VIII mimetic bispecific antibodies for the treatment of hemophilia A: an update

The advent of FVIII-mimetic bispecific antibodies marks a shift in hemophilia A prophylaxis away from FVIII replacement therapies. Next-generation agents may offer enhanced activity and safety. Despite advances, challenges remain in monitoring activity, managing breakthrough bleeds, and understanding non-hemostatic FVIII roles. As long-acting, subcutaneous agents mature, they may redefine care, enabling personalized, safer, and more accessible prophylaxis across the lifespan.