Hemophilia B, also known as christmas disease, is related to hemophilia b leyden and hemophilia. An important gene associated with Hemophilia B is F9 (Coagulation Factor IX), and among its related pathways/superpathways are Response to elevated platelet cytosolic Ca2+ and Collagen chain trimerization. The drugs Anti-inhibitor coagulant complex and Ropivacaine have been mentioned in the context of this disorder. Affiliated tissues include brain and whole blood, and related phenotypes are hematuria and intracranial hemorrhage