: a clotting factor that activates factor VIII and whose deficiency is associated with hemophilia
called also Christmas factor
Examples of factor IX in a Sentence
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Of the 54 men who took part in the clinical trial, two continued to need factor IX injections.
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Julia O'Driscoll, The Week Uk, theweek, 27 June 2024
The standard care for severe hemophilia B is lifelong intravenous infusions of factor IX concentrate, sometimes weekly or even more frequently.
—Jacqueline Howard, CNN, 22 July 2022
For example, factor IX clotting factor is not harmful at high levels, and people with haemophilia B already inject themselves with huge amounts of it.
—Ed Yong, Discover Magazine, 25 Apr. 2012
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Julia O'Driscoll, The Week Uk, theweek, 27 June 2024
The standard care for severe hemophilia B is lifelong intravenous infusions of factor IX concentrate, sometimes weekly or even more frequently.
—Jacqueline Howard, CNN, 22 July 2022
For example, factor IX clotting factor is not harmful at high levels, and people with haemophilia B already inject themselves with huge amounts of it.
—Ed Yong, Discover Magazine, 25 Apr. 2012
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Cite this Entry
“Factor IX.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/factor%20IX. Accessed 21 Dec. 2024.
Copy CitationMedical Definition
factor IX
noun
: a clotting factor that activates factor VIII and whose absence is associated with hemophilia B
called also autoprothrombin II, Christmas factor
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