Factor IX Deficiency (Lhasa Apso)
Body function: Heart & Blood
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Factor IX Deficiency, or Hemophilia B, is a genetic blood disorder specifically identified in Lhasa Apso dogs. It is caused by a deletion mutation in the F9 gene. This mutation leads to the production of less than 1% of normal Factor IX levels, resulting in severe bleeding issues. Hemophilia B is an X-linked recessive trait, making it most common in males.
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