The U.S. Food and Drug Administration today approved Hemlibra (emicizumab-kxwh) to prevent or reduce the frequency of bleeding episodes in adult and pediatric patients with hemophilia A who have developed antibodies called Factor VIII (FVIII) inhibitors. Reducing the frequency or preventing bleeding episodes is an important part of disease management for patients with hemophilia.
Hemophilia A is an inherited blood-clotting disorder that primarily affects males. According to the National Institutes of Health, hemophilia affects one in every 5,000 males born with the condition. Patients with hemophilia A are missing a gene which produces Factor VIII, a protein that enables blood to clot.
Patients may experience repeated episodes of serious bleeding, primarily into their joints, which can be severely damaged as a result. Some patients develop an immune response known as a FVIII inhibitor or antibody. The antibody interferes with the effectiveness of currently available treatments for hemophilia.
Hemlibra is a first-in-class therapy that works by bridging other Factors in the blood to restore blood clotting for these patients. Hemlibra is a preventative (prophylactic) treatment given weekly via injection under the skin (subcutaneous).
Patients treated with Hemlibra reported an improvement in hemophilia-related symptoms (painful swellings and joint pain) and physical functioning (pain with movement and difficulty walking) compared to patients who did not receive prophylactic treatment. Common side effects of Hemlibra include injection site reactions, headache, and joint pain (arthralgia).
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