Tag archives: Absolute

Interpreting Risk-Based Genetic Tests: What is Risk?

Interpreting Risk-Based Genetic Tests: What is Risk?

Paw Print Genetics offers tests that can be categorized into two types.  Most tests offered directly test for a DNA change (or mutation) that causes a disease. For a small number of diseases, we test for a mutation that increases “the chance” that a dog will develop a disease. These have been termed risk variants. Recently, we have been getting a lot of questions about these risk variants and what a positive result means for your dog.  One example is dermatomyositis (DMS) testing, which generates an associated risk (low, moderate, high, or unknown) for this skin condition.  Chondrodystrophy (CDDY) is another example in which the test is for a mutation that causes abnormal cartilage formation and having the mutation may put a dog is at an increased risk for intervertebral disc disease (IVDD).  If you have a Labrador that carries one or two copies of the ATP7B mutation for copper toxicosis, this mutation puts a dog at a greater risk of developing the disease compared to dogs without the mutation. This risk may be mitigated if the dog also has one or two copies of the ATP7A protective mutation for copper toxicosis, which may reduce the ...