Marisa Wexler, MS,  senior science writer—

Concizumab has been approved as a preventive treatment in Canada for hemophilia B patients ages 12 and older who are positive for factor IX inhibitors and need a routine prophylactic to prevent bleeds or reduce their frequency. This is the first approval for the daily under-the-skin injectable therapy, which…

Proteins from tardigrades — microscopic animals known for their ability to survive in extreme conditions — could be used to stabilize replacement therapies for hemophilia A, allowing treatments to be stored for longer periods of time without refrigeration, a proof-of-concept study shows. “Our work provides a proof of principle…

For children with severe hemophilia A who develop inhibitors — neutralizing antibodies that reduce the effectiveness of standard therapies — starting treatment to eliminate inhibitors earlier is associated with a higher chance of success, a recent study reports. The study, “Low-dose immune tolerance induction therapy in…

The U.S. Food and Drug Administration (FDA) is extending its review of BioMarin Pharmaceutical’s request to approve the gene therapy Roctavian (valoctocogene roxaparvovec) for adults with severe hemophilia A. A decision had been expected by the end of this month, but that date has now been…

Most children with hemophilia A given Altuviiio (efanesoctocog alfa) once a week were bleed-free throughout about a year of treatment. That’s according to top-line data from the Phase 3 XTEND-Kids trial (NCT04759131) announced by Sobi and Sanofi, the therapy’s co-developers, less than a month after…

Most people with severe hemophilia A who were given once-weekly treatment with efanesoctocog alfa in the Phase 3 XTEND-1 trial were bleed-free over a year on treatment. The therapy also improved joint and overall physical health and eased pain intensity in the participants compared with previous treatments. Results…

The World Federation of Hemophilia (WFH) has launched a registry to monitor long-term outcomes of safety and effectiveness for people with hemophilia who receive gene therapy treatment. The aim of the WFH Gene Therapy Registry (GTR) is to collect data for all patients who have gene therapy, whether through…

Treatment with the experimental gene therapy fidanacogene elaparvovec led to significant reductions in bleeding rates for men with moderately severe to severe hemophilia B who participated in a Phase 3 clinical trial. That’s according to top-line data from the study BENEGENE-2 (NCT03861273), recently announced by the therapy’s developer,…

Three years after receiving the one-time gene therapy Roctavian (valoctocogene roxaparvovec) at trial, the majority of men with severe hemophilia A in the Phase 3 GENEr8-1 study were off standard replacement therapies and did not experience any bleeds requiring treatment. That’s according to new data announced in a…

One-time treatment with the investigational gene therapy SPK-8011 led to sustained low bleed rates for people with hemophilia A in a Phase 1/2 clinical trial. That’s according to data of up to 5 years of follow-up presented by the therapy’s developer, Spark Therapeutics, at the annual meeting of…