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Chondrodystrophy (CDDY with IVDD Risk) and Chondrodysplasia (CDPA)

Test number: 8294
Gene: FGF4-12 and FGF4-18
Price: £ 48.00 (including VAT)
Breeds
All Dog Breeds , American Cocker Spaniel , Basset Hound , Beagle , Bichon Frise , Cavalier King Charles Spaniel , Welsh Corgi (Cardigan) , Chesapeake Bay Retriever , Chihuahua , Coton de Tulear , Dachshund , Dandie Dinmont Terrier , English Springer Spaniel , French Bull Dog , Havanese - Bichon Havanese , Jack Russell Terrier , Miniature Poodle , Miniature Wire haired Dachshund , Miniature Long Haired Dachshund , Miniature Smooth Haired Dachshund , Nova Scotia Duck tolling Retriever ( NSDTR / Toller) , Papillon (Continental Toy Spaniel ) , Pekingese , Pembroke Welsh Corgi , Portuguese Waterdog , Scottish Terrier , Shih Tzu , Toy Poodle , West Highland White Terrier , Welsh Corgi .
Description

Chondrodystrophy (CDDY with IVDD Risk) and Chondrodysplasia (CDPA)

The test checks for two mutations: CDDY with IVDD Risk, and CDPA, and so you will receive two results, one for each mutation.

Chondrodystrophy CDDY (FGF4-12) which causes short legs and the risk of developing Intervertebral Disc Disease (IVDD).

Chondrodysplasia CDPA (FGF4-18), which causes the short legged phenotype in a number of breeds.

Chondrodystrophy (CDDY with IVDD Risk) is a trait that is common to many dog breeds and it is characterised by shorter legs due to shorter long bones. CDDY can also be associated with Intervertebral Disc Disease (IVDD) due to premature degeneration of the intervertbral disc. The intervertebral disc lie between the vertebrae and it is made of a cartilage which separate vertebrae from each other, absorb shocks and allow slight movement of the vertebrae. In affected dogs, premature calcification of part of the disc at early age (from birth to 1 year of age) results in degeneration of all discs in young dogs. These abnormal discs are susceptible to herniation into the spinal canal where the inflammation, and hemorrhage can cause severe pain and neurological dysfunction. CDDY is inherited as a semi-dominant trait which means that dogs with 2 copies of the mutation are smaller than dogs with only 1 copy. As for IVDD, the inheritance follows a dominant mode, meaning that 1 copy of CDDY mutation is sufficient to predispose dogs to IVDD.

The CDDY mutation has been found in breeds such as: Basset Hound, Beagle, Bichon Frise, Cardigan Welsh Corgi, Cavalier King Charles Spaniel, Chesapeake Bay Retriever, Chihuahua, American Cocker Spaniel, Coton de Tulear, Dachshund, Dandie Dinmont Terrier, English Springer Spaniel, French Bulldog, Havanese, Jack Russell Terrier, Nova Scotia Duck Tolling Retriever, Pekingese, Pembroke Welsh Corgi, Poodle (Miniature and Toy), Portuguese Water Dog, Scottish Terrier, Shih Tzu.

The second mutation CDPA explains the short-legged phenotype known as chondrodysplasia (CDPA) in breeds such as Basset Hound, Pembroke Welsh Corgi, Dachshunds, West Highland White Terriers and Scottish Terriers. CDPA inheritance is considered to follow am autosomal dominant mode.

In some breeds both mutations are present and so breeders will be able to plan breeding to reduce occurrence of CDDY, while retaining the short-legged phenotype CDPA.

 
Further reading
FGF4 retrogene on CFA12 is responsible for CDDY and IVDDHTML file
Phenotypic Effects of FGF4 on IVDD (2019)HTML file
Sample Requirements
Whole blood in EDTA tube (0.5 - 1 ml) or Buccal Swabs.
Turnaround
1-3 weeks
Price
£ 48.00 (including VAT)

To order:




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