The effectiveness of liver-directed, viral-based gene transfer — the most used experimental gene therapy approach for hemophilia A — is significantly reduced in mouse models of hemophilia A relative to healthy mice, a study shows. This limitation was associated with a pronounced reduction in fenestrations — cell surface…

The investigational gene therapy Roctavian continues to effectively and safely prevent bleeding episodes and the need for clotting factor VIII replacement therapy in adults with severe hemophilia A, five-year data from a Phase 1/2 study show. BioMarin Pharmaceutical, the therapy’s developer, plans to share the data in…

Prophylactic replacement therapy to prevent bleeds was more cost-effective than on-demand treatment of active bleeds for children and adolescents in China with moderate or severe hemophilia A without inhibitors, a study reported. The superior cost-effectiveness of prophylaxis over on-demand treatment was mainly driven by the on-demand costs of treating…

Genevant Sciences is teaming up with Novo Nordisk to develop a gene-editing treatment for hemophilia A that combines Genevant’s proprietary lipid nanoparticle (LNP) platform with cutting-edge mRNA-based megaTAL technology. The partners will seek to advance a treatment involving gene editing — used to correct, add, or delete…

When my first son, Julian, was born in 1996 and diagnosed with severe hemophilia A, I thought my world was ending. I expected to give birth to a healthy baby boy. I never dreamed he’d have a medical condition. I went through the stages of grief: denial,…

Children and young adults with hemophilia A and hemophilia B have several behavioral problems, ranging from depression and anxiety to aggressive behaviors, a small study suggests. Age, disease severity, and joint disease duration were found to be significantly correlated with several of these problems. The findings were reported in the…

Boys with severe hemophilia A who switched to Kovaltry (octocog alfa), which replaces a missing clotting protein called factor VIII (FVIII), retained the therapy for longer in the body and had fewer bleeds, a study in China reported. Findings come from a head-to-head comparison of Kovaltry and three…

People in France with severe hemophilia A who switched to Elocta (efmoroctocog alfa) — an extended half-life replacement therapy — had fewer infusions and a reduced rate of joint bleeds, a real-world study reports. Notably, those who switched to Elocta had a higher bleeding rate, including joint bleeds,…

The first participant has been dosed in a Phase 3 clinical trial testing marzeptacog alfa activated (MarzAA), an experimental under-the-skin therapy for hemophilia A and B patients with inhibitors. The study, called Crimson-1 (NCT04489537) and sponsored by the therapy’s developer, Catalyst Biosciences, is currently recruiting patients at sites…

Problematic thrombotic events are fairly rare in people using NovoSeven, among all types of bleeding disorders for which it is approved, including hemophilia, a review study shows. The study, “Thrombotic events with recombinant activated factor VII (rFVIIa) in approved indications are rare and associated with older age,…