Diseases and Disorders, Disorders of Coagulation Factors
Last Updated: July 13, 2026 Introduction to Factor XI Factor XI is historically known as plasma thromboplastin antecedent (PTA). Factor XI participates in the intrinsic coagulation cascade. Factor XI is activated to XIa by a complex of high molecular weight kininogen...
Diseases and Disorders, Disorders of Coagulation Factors
Last Updated: July 13, 2026 Introduction to Factor X Factor X is historically identified as Stuart-Prower Factor. Factor X, along with prothrombin, factors VII, and IX, protein C, protein S, and protein Z, is modified by the vitamin K-dependent enzyme, γ-glutamyl...
Diseases and Disorders, Disorders of Coagulation Factors
Last Updated: July 13, 2026 Introduction to Hemophilia B Hemophilia B, also known as factor IX deficiency or Christmas disease, is an X-linked recessive bleeding disorder caused by defects in the vitamin K-dependent enzyme, factor IX, of the clotting...
Diseases and Disorders, Disorders of Coagulation Factors
Last Updated: July 13, 2026 Introduction to Hemophilia A Hemophilia A is referred to as classic hemophilia and was first recognized in the second century AD. The disease is an X-linked recessive bleeding disorder caused by defects in the clotting...
Diseases and Disorders, Disorders of Coagulation Factors
Last Updated: July 13, 2026 Role of Protein C in Coagulation Protein C (PC) is a trypsin-like serine protease that serves as a major regulator of the coagulation process. Protein S (PS) serves as a co-factor for the functions of activated protein C (abbreviated aPC,...
