FDA grants efanesoctocog alfa Breakthrough Therapy designation for hemophilia A
- Efanesoctocog alfa is the first factor VIII therapy to be awarded Breakthrough Therapy designation by the FDA
- Designation is based on XTEND-1 Phase 3 study data demonstrating a clinically meaningful prevention of bleeds and superiority in prevention of bleeding episodes compared to prior prophylaxis factor treatment
- Efanesoctocog alfa is a novel and investigational factor VIII therapy designed to provide normal to near-normal factor activity levels for the majority of the week in a once-weekly prophylactic treatment regimen
Breakthrough Therapy designation is designed to expedite the development and review of drugs in the US that target serious or life-threatening conditions. Drugs qualifying for this designation must show preliminary clinical evidence that the drug may demonstrate a substantial improvement on clinically significant endpoints over available therapies.
John Reed, MD, PhD
Global Head of Research and Development at
“The Breakthrough Therapy designation highlights efanesoctocog alfa’s potential to transform treatment for people with hemophilia A by providing higher protection for longer duration. This potential new class of factor VIII therapy represents how we are boldly advancing science to address unmet needs for the hemophilia community. We are excited to work with regulatory authorities during the filing and review of this innovative therapy.”
Head of Research and Development and Chief Medical Officer at Sobi
“This designation supports the innovation of efanesoctocog alfa and acknowledges its potential to fulfill an unmet medical need for people living with hemophilia A. We are committed to transforming lives for people living with rare diseases, and this is a testament to the medical innovation that science can bring.”
Topline results from the pivotal XTEND-1 Phase 3 study demonstrate efanesoctocog alfa met the primary endpoint, showing a clinically meaningful prevention of bleeds in people with severe hemophilia A over a 52-week period. Importantly, the key secondary endpoint was also met, demonstrating that efanesoctocog alfa was superior to prior prophylactic factor VIII replacement therapy in preventing bleeding events based on an intra-patient comparison. Efanesoctocog alfa was well-tolerated, and inhibitor development to factor VIII was not detected. The most common treatment-emergent adverse events (>5% of participants overall) were headache, arthralgia, fall, and back pain.
Data from the XTEND-1 Phase 3 study are expected to be shared at an upcoming medical meeting, and those data will serve as the basis for submission to FDA mid-year 2022. The FDA granted efanesoctocog alfa Orphan Drug designation in
Hemophilia A occurs in about one in 5,000 male births annually, and more rarely in females. It is a lifelong condition in which the ability of a person’s blood to clot is impaired due to a coagulation factor deficiency. People with hemophilia can experience bleeding episodes that can cause pain, irreversible joint damage, and life-threatening hemorrhages. Unmet medical needs remain for people with hemophilia to strengthen protection, reduce treatment burden, and improve quality of life.
About efanesoctocog alfa (BIVV001)
Efanesoctocog alfa is a novel and investigational recombinant factor VIII therapy that is designed to extend protection from bleeds with once-weekly prophylactic dosing for people with hemophilia A. It builds on the innovative Fc fusion technology by adding a region of von Willebrand factor and XTEN® polypeptides to extend its time in circulation. It is the first investigational factor VIII therapy that has been shown to break through the von Willebrand factor ceiling, which imposes a half-life limitation on current factor VIII therapies. Efanesoctocog alfa is currently under clinical investigation and its safety and efficacy have not been evaluated by any regulatory authority.
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About Sobi®
Sobi is a specialized international biopharmaceutical company transforming the lives of people with rare diseases. Providing sustainable access to innovative medicines in the areas of haematology, immunology and specialty care, Sobi has approximately 1,600 employees across
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