ATC Group: B02BD04 Coagulation factor IX

Factor IX is a single chain glycoprotein with a molecular mass of about 68,000 Dalton. It is a vitamin-K dependent coagulation factor and it is synthesised in the liver. Factor IX is activated by factor XIa in the intrinsic coagulation pathway and by the factor VII/tissue factor complex in the extrinsic pathway. Activated factor IX, in combination with activated factor VIII, activates factor X.

Eftrenonacog alfa is a long-acting, fully recombinant, fusion protein comprising human coagulation factor IX covalently linked to the Fc domain of human immunoglobulin G1, and produced by recombinant DNA technology. Haemophilia B is an X-linked hereditary disorder of blood coagulation due to decreased levels of factor IX and results in bleeding into joints, muscles or internal organs, either spontaneously or as a result of accidental or surgical trauma. By replacement therapy the plasma level of factor IX is increased thereby enabling a temporary correction of the factor deficiency and correction of the bleeding tendencies.

Nonacog alfa is a recombinant coagulation factor IX. Recombinant coagulation factor IX is a recombinant DNA-based protein therapeutic which has structural and functional characteristics comparable to endogenous factor IX. Haemophilia B is a sex-linked hereditary disorder of blood coagulation due to decreased levels of factor IX. By replacement therapy the plasma levels of factor IX is increased, thereby enabling a temporary correction of the factor deficiency and correction of the bleeding tendencies.