Definitions for factor ix

This page provides all possible meanings and translations of the word factor ix

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  1. Christmas factor, factor IX(noun)

    coagulation factor whose absence is associated with hemophilia B

FreebaseRate this definition:(0.00 / 0 votes)

  1. Factor IX

    Factor IX is one of the serine proteases of the coagulation system; it belongs to peptidase family S1. Deficiency of this protein causes hemophilia B. It was discovered in 1952 after a young boy named Stephen Christmas was found to be lacking this exact factor, leading to hemophilia.

U.S. National Library of MedicineRate this definition:(0.00 / 0 votes)

  1. Factor IX

    Storage-stable blood coagulation factor acting in the intrinsic pathway. Its activated form, IXa, forms a complex with factor VIII and calcium on platelet factor 3 to activate factor X to Xa. Deficiency of factor IX results in HEMOPHILIA B (Christmas Disease).


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