FDA approves new formulation of genetically engineered version of Factor VIIa plasma protein

The U.S. Food and Drug Administration today approved a new formulation of the genetically engineered version of Factor VIIa, a plasma protein essential for the clotting of blood. The new formulation allows the product to be stored at room temperature (up to 81 degrees Fahrenheit) for up to two years.

"Approval of this product for room temperature storage creates greater flexibility in disease management for both patients and physicians," said Jesse L. Goodman, M.D., M.P.H., director of the FDA's Center for Biologics Evaluation and Research. "As with all FDA-approved products, the agency will monitor NovoSeven RT throughout its life cycle."

NovoSeven RT-the new formulation of NovoSeven Coagulation Factor VIIa (Recombinant)-contains sucrose and L-Methionine, which allow for storage at room temperature. This is helpful for health-care facilities with limited refrigerated space. The original formula could be stored for three years at temperatures between 36 and 46 degrees Fahrenheit.

NovoSeven RT shares the same uses as the earlier NovoSeven product. These uses include the treatment of bleeding and the prevention of surgical bleeding in patients with hemophilia A or B, who have antibodies that neutralize the action of clotting Factors VIII or IX; the treatment of bleeding and the prevention of surgical bleeding in patients with congenital Factor VII deficiency; and the prevention of surgical bleeding in patients with acquired hemophilia.

Coagulation factors are proteins found in plasma, which help blood clot. When one or more of these proteins are missing or inactive, bleeding can occur.

The most commonly observed adverse reactions with NovoSeven RT are fever, bleeding, injection site reaction, joint discomfort, headache, elevations or falls in blood pressure, nausea, vomiting, pain, swelling, and rash. Some elderly patients experienced an increased risk of arterial clotting when they were treated with NovoSeven RT outside of its approved indications.

NovoSeven RT and NovoSeven Coagulation Factor VIIa (Recombinant) are manufactured by Novo Nordisk A/S, located in Denmark.


The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
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