Macrothrombocytopenia (MTC)

Thrombocytopenia is a blood disorder in which the body produces abnormally low levels of thrombocytes (blood platelets), which are responsible for clotting. Depending on the variant, symptoms may range from prolonged breeding times to an apparently healthy animal.

This variant of the disorder, sometimes called Macrothrombocytopenia (MTP), is found in the Norfolk Terrier and Cairn Terrier, and is caused by a recessive mutation to the gene TUBB1.