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Factor IX MeSH Descriptor Data 2025


MeSH Heading
Factor IX
Tree Number(s)
D08.622.355
D12.776.124.125.375
D12.776.811.243.355
D23.119.375
Unique ID
D005164
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D005164
Scope Note
Storage-stable blood coagulation factor acting in the intrinsic pathway of blood coagulation. 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).
Entry Term(s)
Autoprothrombin II
Blood Coagulation Factor IX
Christmas Factor
Coagulation Factor IX
Factor 9
Factor IX Complex
Factor IX Fraction
Factor Nine
Plasma Thromboplastin Component
CAS Type 1 Name
Blood-coagulation factor IX
NLM Classification #
WH 310
See Also
Coagulants
Entry Combination
deficiency:Hemophilia B
Date Established
1966/01/01
Date of Entry
1999/01/01
Revision Date
2019/05/30
Factor IX Preferred
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