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Official Full Name
coagulation factor VIII, procoagulant component
Background
Factor VIII (FVIII) is an essential blood-clotting protein, also known as anti-hemophilic factor (AHF). In humans, factor VIII is encoded by the F8 gene. Defects in this gene results in hemophilia A, a recessive X-linked coagulation disorder. Factor VIII is produced in liver sinusoidal cells and endothelial cells outside of the liver throughout the body. This protein circulates in the bloodstream in an inactive form, bound to another molecule called von Willebrand factor, until an injury that damages blood vessels occurs. In response to injury, coagulation factor VIII is activated and separates from von Willebrand factor. The active protein (sometimes written as coagulation factor VIIIa) interacts with another coagulation factor called factor IX. This interaction sets off a chain of additional chemical reactions that form a blood clot.
Synonyms
Factor VIII; FVIII; F8; coagulation factor VIII, procoagulant component; AHF; F8B; F8C; HEMA; DXS1253E; coagulation factor VIII; factor VIII F8B; antihemophilic factor; coagulation factor VIIIc; Factor VIIIF8B; hemophilia A