Details about the disease
SLEM (Spongiform leuco-encephalo-myelopathy) or shaking puppy syndrome (SPS) is a relatively new condition associated with the central nervous system which usually affects puppies at around 2 weeks old, when they begin to make attempts to walk. Occasionally some puppies have started to shake at a later age of about 10 weeks old.
Clinical signs include severe tremors, mainly in the hindquarters, which are seen as an uncoordinated side-to-side movement of the rear end, appearing as an excessive, uncoordinated wagging of the tail and body. These tremors cease when the puppy sleeps. Affected pups have difficulty feeding and often grow slowly. In many cases they are put to sleep because of welfare concerns but a few have recovered with careful nursing and appear to be relatively normal as adults.
How is it inherited?
The disease is described as an autosomal-recessive condition. This means that a dog must inherit two copies of an abnormal gene (one from its mother and one from its father) before its health is affected. A dog that inherits only one copy of the abnormal gene (from its mother or its father) will have no signs of the disease, but will be a carrier and may pass the gene on to any offspring.
Which laboratories test for this condition?
A list of laboratories that test for SLEM can be found below.
Laboratories that send a copy of your dog's results straight to The Kennel Club, so you don't have to.
|AHT (UK)||The AHT closed down on 31 July and no longer offers this test.
|OFA (USA)||Email: OFA
Where will your dog's results be published?
DNA test results from these laboratories are sent directly to The Kennel Club and are recorded on to the dog's record in the registration database, and are published:
- in the next available Breed Records Supplement
- on our Health Test Results Finder
How to responsibly breed from your DNA-tested dog
If, once your dog is DNA tested, you would like to find out what their DNA test results mean, or how to select the right mate to avoid producing affected puppies, then please read our breeding advice and DNA testing information.
How to find out if a potential mate has been DNA tested
The Kennel Club’s Health Test Results Finder allows you to find the results of DNA tests carried out as part of The Kennel Club's official DNA testing schemes for any dog on The Kennel Club’s Breed Register.