Trapped neutrophil syndrome (TNS) is a hereditary disease which can be tested with a DNA test. Trapped neutrophil syndrome (TNS) is an autosomal recessive inherited neutropenia in the Border Collie breed. This hereditary disease, originally detected in Border Collies in Australia and New Zealand in the 1990's, is characterized by a marked reduction in numbers of neutrophils in peripheral blood and a hyperplasia of myeloid cells in bone marrow. Due to the severe neutropenia, affected dogs are consistently subject to life-threatening infections, resulting in premature death. However, a definitive diagnosis has been difficult because the original clinical characteristics except neutropenia have yet to be completely determined and the clinical features are often modified by chronic and recurrent infections. 

Inheritance: autosomal recessive - read more

Mutation: VSP13B gene

Genetic test: The method used for genetic testing is extremely accurate and allows complete differentiation between affected animals, carriers and healthy dogs. DNA testing can be done at any age. 

Disease control: read more

DNA test sample: EDTA whole blood (1.0 ml) or buccal swabs. Detailed information about sampling can be found here.