Moroctocog alfa (trade name ReFacto in the EU) is a recombinant antihemophilic factor genetically engineered from Chinese hamster ovary (CHO) cell line. Chemically it is a glycoprotein.[3] It is manufactured by Genetics Institute, Inc. and used to control and prevent hemorrhagic bleeding and prophylaxis associated with surgery or to reduce the number of spontaneous bleeding episodes in patients with hemophilia A.[4] It is partially a recombinant coagulation factor VIII since it has an amino acid sequence which compares to the 90 + 80 kDa form of factor VIII (BDDrFVIII).[5] It also has posttranslational modifications which are similar to those of the plasma-derived molecule. It can not prevent hemorrhagic bleeding associated with von Willebrand's disease since it is not a von Willebrand factor.
The most common side effects include headache, cough, pain in the joints and fever. People may also develop antibodies against factor VIII medicines such as moroctocog alfa. These are known as inhibitors as they can prevent the medicine from working effectively, which may result in a loss of bleeding control. Uncommonly, people may also develop allergic reactions.
People with haemophilia A lack factor VIII, a protein needed for normal clotting of the blood, and as a result, they bleed readily and may have problems, such as bleeding in the joints, muscles and internal organs.