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  1. Hemophilia 
    https://medlineplus.gov/ency/article/000537.htm
    ... hemophilia; Factor VIII deficiency; Hemophilia B; Christmas disease; Factor IX deficiency; Bleeding disorder - hemophilia ... by the lack of clotting factor VIII or IX in the blood. In most cases, hemophilia is passed down through families (inherited). Most of the time, it is passed to male children.
  2. Hemophilia 
    https://medlineplus.gov/hemophilia.html
    ... lack or decrease of clotting factor VIII (8) Hemophilia B (Christmas disease), which is caused by a lack ...
  3. Hemophilia B 
    https://medlineplus.gov/ency/article/000539.htm
    Christmas disease; Factor IX hemophilia; Bleeding disorder - hemophilia B ... Factor IX (nine) is one such coagulation factor. Hemophilia B is the result of the body not making ...
  4. Hemophilia B - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK1495
    ... Search term GeneReviews Advanced Search Help < Prev Next > Hemophilia B Synonyms: Christmas Disease, Factor IX Deficiency Barbara A Konkle , MD and Shelley Nakaya Fletcher , ...
  5. xmlghr-summaries.xml 
    https://medlineplus.gov/download/ghr-summaries.xml
    ... hemophilia B (also known as Christmas disease or factor IX deficiency). Although the two types have very similar signs ... different genes. People with an unusual form of hemophilia B, known as hemophilia B Leyden, experience episodes of ...
  6. xmlmplus_topics_2025-09-25.xml 
    https://medlineplus.gov/xml/mplus_topics_2025-09-25.xml
    ... also-called >Christmas disease</also-called><also-called >Factor IX deficiency</also-called><also-called >Factor VIII deficiency</also- ... decrease of clotting factor VIII (8)</li> <li>Hemophilia B (Christmas disease), which is caused by a lack ...
  7. MedlinePlus Drug Information: Fidanacogene elaparvovec-dzkt Injection 
    https://medlineplus.gov/druginfo/meds/a624028.html
    ... injection is used to treat moderate to severe hemophilia B (an inherited condition in which the blood does ... may only be used in certain adults with hemophilia B. Your doctor will order a blood test to ...
  8. NLM Digital Collections - Gene therapy for hemophilia B and an update on gene therapy for hemophilia A : effectiveness .... 
    Publication: [Boston, Massachusetts] : Institute for Clinical and Economic Review, December 22, 2022
    resource.nlm.nih.gov/9918697386506676
    ... clotting factor 9 deficiency' OR 'congenital blood clotting factor ix deficiency' OR 'congenital clotting factor 9 deficiency' OR 'mckusick ... Deficiency, Factor IX" or "Deficiencies, Factor IX" or "Factor IX Deficiencies" or "Factor IX Deficiency" or "Hemophilia B Leyden™ ...
  9. MedlinePlus Drug Information: Etranacogene dezaparvovec-drlb Injection 
    https://medlineplus.gov/druginfo/meds/a623001.html
    Etranacogene dezaparvovec-drlb injection is used to treat hemophilia B (an inherited condition in which the blood does ...
  10. MedlinePlus Drug Information: Marstacimab-hncq injection 
    https://medlineplus.gov/druginfo/meds/a624071.html
    ... missing or faulty blood clotting factor VII) or hemophilia B (condition in which the blood does not clot ...
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