Factor IX Deficiency (Cairn Terrier)

Body function:

Heart & Blood

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Hemophilia B, also known as factor IX deficiency, is a blood clotting disorder caused by a mutation in the F9 gene. Dogs with the condition lack factor IX, a necessary component of blood clotting. These dogs may bleed excessively as a result of even minor traumas.

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List of affected breeds:

Genetic research has linked this gene and condition in the following breeds:

Cairn Terrier

A white dog with a friendly expression is looking up at the camera with its mouth open and tongue out. The dog's fur is slightly ruffled.

What does this mean for a dog with this trait?

There is no known cure for hemophilia B. Dogs with the condition should be monitored for signs of internal bleeding. Veterinarians should also be informed prior to any surgeries so they may have extra blood on hand in case transfusion is needed.

Symptoms

Signs of hemophilia B typically appear during teething, when dogs bleed excessively as new teeth come in. Dogs with the condition may also experience sudden nosebleeds. Hemophilia B can lead to substantial bleeding after trauma or surgeries and may cause internal bleeding as well.

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