Marisa Wexler, MS,  senior science writer—

The parents of most children with severe hemophilia A who took part in the XTEND-Kids clinical trial of Altuviiio (efanesoctocog alfa) reported in exit interviews that the once-weekly treatment led to notable improvements in mood for their sons, with some reporting a greater ability for their boys to…

The once-weekly injection therapy marstacimab is being considered for approval in both the U.S. and Europe for people with hemophilia A and hemophilia B who don’t have inhibitors. The U.S. Food and Drug Administration (FDA) is expected to decide on it in late 2024, while a decision from the European…

A first patient has been dosed in a Phase 1/2a clinical trial that’s assessing the safety and preliminary efficacy of ASC618, a second-generation gene therapy for hemophilia A. The Phase1/2a study (NCT04676048), which has been in the works since 2021, aims to enroll about 12 men with severe…

AAV5 DetectCDx, a companion diagnostic test used to determine patient eligibility for the hemophilia A gene therapy Roctavian (valoctocogene roxaparvovec-rvox), has been cleared for use under more stringent European Union rules coming into effect in a few years. Specifically, the test gained the Conformité Européenne (CE) mark under…

The first participant has been dosed in a Phase 2b clinical trial that’s assessing the safety and efficacy of SerpinPC in people with hemophilia B who have inhibitors, according to an announcement from its developer, Centessa Pharmaceuticals. “We are excited to be further evaluating the potential of…

Treatment with platelets stripped of their natural sugar molecule coating helped to prevent inhibitors, or neutralizing antibodies, from forming against clotting factor VIII (FVIII) replacement therapy in a mouse model of hemophilia A, a study reported. Platelets promote blood clotting, and they are generally thought to boost inflammation…

Altuviiio (efanesoctocog alfa) has been approved in Japan and Taiwan as a treatment to prevent and control bleeding in people with hemophilia A. The Japanese Ministry of Health, Labor, and Welfare (MHLW) granted Altuviiio marketing authorization on Sept. 25, according to Sanofi, the company that markets…

Treatment with Idelvion (albutrepenonacog alfa) was effective in a real-world setting at controlling bleeds for five people with hemophilia B at a center in Spain. That’s according to data reported in the study, “Benefits of rIX-FP prophylaxis in patients with Haemophilia B: real-world evidence from…

The U.S. Food and Drug Administration (FDA) is considering updating the prescribing information for Altuviiio (efanesoctocog alfa) to include final data on a clinical trial that tested the now-approved therapy in children with hemophilia A. Sanofi, which markets Altuviiio in the U.S., submitted a supplemental biologics license…

To help advance new treatments for hemophilia and other blood disorders, Pathway to Cures (P2C) has invested $250,000 in Anvesana, a company working to develop therapies based on RNA biology. “Anvesana is delighted to be working with Pathway to Cures to develop therapeutics that will bring life altering…