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Chihuahua DNA bundle (CDDY/CDPA (IVDD risk) + MTC + NCL + prcd-PRA)
Test number: 8754
Price: £ 138.00 (including VAT) for all 4 tests
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1 ) Chondrodystrophy (CDDY with IVDD Risk) and Chondrodysplasia (CDPA)
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Breeds
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All Dog Breeds
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American Cocker Spaniel
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Basset Hound
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Beagle
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Bichon Frise
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Cavalier King Charles Spaniel
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Welsh Corgi (Cardigan)
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Chesapeake Bay Retriever
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Chihuahua
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Coton de Tulear
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Dachshund
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Dandie Dinmont Terrier
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English Springer Spaniel
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French Bull Dog
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Havanese - Bichon Havanese
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Jack Russell Terrier
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Miniature Poodle
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Miniature Wire haired Dachshund
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Miniature Long Haired Dachshund
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Miniature Smooth Haired Dachshund
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Nova Scotia Duck tolling Retriever ( NSDTR / Toller)
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Papillon (Continental Toy Spaniel )
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Pekingese
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Pembroke Welsh Corgi
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Portuguese Waterdog
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Scottish Terrier
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Shih Tzu
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Toy Poodle
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West Highland White Terrier
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Welsh Corgi
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Description |
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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.
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2 ) Macrothrombocytopenia ( MTC-D )
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Breeds
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American Cocker Spaniel
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Bichon Frise
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Boxer
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Cavalier King Charles Spaniel
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Cavapoo
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Chihuahua
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Cocker Spaniel
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Dwarf poodle
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English Cocker Spaniel
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Havanese - Bichon Havanese
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Jack Russell Terrier
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Labrador Retriever
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Maltese
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Miniature Poodle
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Parson Russell Terrier (PRT)
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Poodle
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Shih Tzu
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Standard Poodle
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Toy Poodle
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Description |
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Macrothrombocytopenia ( MTC ) is inherited as an autosomal dominant trait characterized by low platelet count and the presence of some larger than normal platelets in circulation.
Unlike acquired macrothrombocytopenia (thrombocytopenias secondary to infectious agents, medications, immune-mediated causes), this form does not respond to treatment.
It is important to note that these dogs may mistakenly be considered to have an underlying disease that results in thrombocytopenia, such as immune-mediated thrombocytopenia, tick-borne infection, or a bone marrow disorder.
TC ) is inherited as an autosomal dominant trait and results can be Clear (N/N), Affected heterozygous (N / MTC), Affected homozygous (MTC / MTC)
A RECESSIVE form of MTC is found in other breeds click on the following link for further details: Recessive Macrothrombocytopenia (MTC) .
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3 ) Neuronal Ceroid Lipofuscinosis ( CL / NCL )
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Breeds
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American Bulldog
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Border Collie
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Cane Corso (Italian)
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Chihuahua
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Chinese Crested
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English Setter
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Golden Retriever
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Goldendoodle
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Gordon Setter
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Saluki
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Schapendoes (Dutch Sheep Dog)
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Small Swiss Hound
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Tibetan Terrier
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Kennel Club
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This test is part of the Official UK Kennel Club DNA Testing Scheme in Border Collie, English Setter, Saluki, and Tibetan Terrier.
for UK registered dogs, Laboklin can send results of the tests which are part of the Official UK Kennel Club DNA testing scheme to the Kennel Club (KC) to be recorded and published
as part of the Kennel Club scheme. Results will only be recorded and published by the KC if the result report includes the dog’s
microchip or tattoo number along with either the dog’s registered name or registered number. Any test results that do not carry these identifying
features will not be recorded by the Kennel Club.
In order to ensure that test results are sent to the Kennel Club, customers must also sign the declaration section on the order form to give Laboklin permission to do so.
important:
When you sign the declaration, Laboklin will send the results to the KC on your behalf, and you do not need to send them to the KC yourself again to avoid unnecessary duplications.
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The Disease |
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The clinical course includes increasing levels of agitation and possible outbursts of aggression, hallucinations, hyperactivity and epileptic fits. Most animals lose their ability to coordinate everyday muscular activities. As the extent of neurodegeneration increases, all affected dogs develop psychological abnormalities and ataxia.
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Description |
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The mutation-based gene test and its advantages
The genetic defect leading to the disease has been identified. By DNA testing, the responsible mutation can be shown directly. This method provides a very high accuracy test and can be done at any age. It offers the possibility to distinguish not only between affected and clear dogs, but also to identify clinically healthy carriers. This is an essential information for controlling the disease in the breed, as carriers are able to spread the disease in the population, but can not be identified by means of common laboratory diagnostic.
* Please note 2 different variants can be detected in each of the following breeds: Australian Shepherd and Miniature American Shepherd, Australian Cattle Dog, and Dachshunds, and therefore we have a separate listing combining the two relevant tests for each breed at a discounted price:
please check here.
We also offer NCL in American Staffordshire Terrier. which is run by a partner lab
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Trait of Inheritance |
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Ceroid lipofuscinosis in Border Collies and American Bulldogs is an inherited autosomal recessive trait. This means that a dog can be clear (homozygous normal), affected, or a carrier (heterozygous). The carriers can spread the diseased gene in the population. Therefore, reliable information on non-affected dogs is the key to controlling this disease.
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Inheritance : AUTOSOMAL
RECESSIVE
trait
Sire
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Dam
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Offspring
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clear
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clear
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100% clear
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clear
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carrier
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50% clear + 50%
carriers
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clear
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affected
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100% carriers
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carrier
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clear
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50% clear + 50%
carriers
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carrier
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carrier
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25% clear + 25% affected
+ 50% carriers
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carrier
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affected
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50% carriers + 50%
affected
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affected
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clear
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100% carriers
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affected
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carrier
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50% carriers + 50%
affected
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affected
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affected
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100% affected
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Clear
Genotype: N / N [ Homozygous normal ]
The dog is noncarrier of the mutant gene.
It is very unlikely that the dog will develop Neuronal Ceroid Lipofuscinosis ( CL / NCL ). The dog will never pass the mutation to its offspring, and therefore it can be bred to any other dog.
Carrier
Genotype: N / NCL [ Heterozygous ]
The dog carries one copy of the mutant gene and one
copy of the normal gene.
It is very unlikely that the dog will develop Neuronal Ceroid Lipofuscinosis ( CL / NCL ) but since it carries the mutant gene, it can pass it on to its offspring with the probability of 50%. Carriers should only be bred to clear dogs. Avoid breeding carrier to carrier because 25% of their offspring is expected to be affected (see table above)
Affected
Genotype: NCL / NCL [ Homozygous mutant ]
The dog carries two copies of the mutant gene and
therefore it will pass the mutant gene to its entire offspring.
The dog is likely to develop Neuronal Ceroid Lipofuscinosis ( CL / NCL ) and will pass the mutant gene to its entire offspring
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4 ) Progressive Retinal Atrophy (prcd-PRA): (8094P / 8127)
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Kennel Club: results of this test is accepted by the Kennel Club
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Breeds
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All Dog Breeds
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American Cocker Spaniel
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American Eskimo
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Australian Cattle Dog
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Australian Shepherd
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Australian Stumpy Tail Cattle Dog
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Australian Stumpy tail cattle Dog
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Barbet (French Water Dog)
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Bearded Collie
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Bolognese
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Bolonka Zwetna (Tsvetnaya Bolonki)
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Cavapoo
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Chesapeake Bay Retriever
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Chihuahua
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Chinese Crested
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Cockapoo (English)
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Cockapoo (American)
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Cocker Spaniel
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Dwarf poodle
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English Cocker Spaniel
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English shepherd
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Entlebuch Mountain dog
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Finnish Lapphund
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German Spitz (Mittel)
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Giant Schnauzer
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Golden Retriever
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Goldendoodle
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Jack Russell Terrier
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Japanese Chin
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Karelian Bear Dog
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Kuvasz
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Labradoodle
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Labrador Retriever
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Lagotto Romagnolo
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Lapponian Herder
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Markiesje
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Miniature Poodle
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Miniature American Shepherd
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Norwegian Elkhound
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Nova Scotia Duck tolling Retriever ( NSDTR / Toller)
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Parson Russell Terrier (PRT)
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Poodle
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Portuguese Waterdog
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Schipperke
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Australian Silky Terrier
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Spanish Water Dog
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Standard Poodle
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Swedish Lapp Hund
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Toy Poodle
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Waeller (Wäller)
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Yorkshire Terrier
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Kennel Club
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This test is part of the Official UK Kennel Club DNA Testing Scheme in American Cocker Spaniel, Australian Cattle Dog, Australian Shepherd, Barbet (French Water Dog), Chesapeake Bay Retriever, Chinese Crested, Cocker Spaniel, English Cocker Spaniel, Entlebuch Mountain dog, Finnish Lapphund, Giant Schnauzer, Labrador Retriever, Miniature Poodle, Norwegian Elkhound, Nova Scotia Duck tolling Retriever ( NSDTR / Toller), Portuguese Waterdog, Spanish Water Dog, Standard Poodle, and Toy Poodle.
for UK registered dogs, Laboklin can send results of the tests which are part of the Official UK Kennel Club DNA testing scheme to the Kennel Club (KC) to be recorded and published
as part of the Kennel Club scheme. Results will only be recorded and published by the KC if the result report includes the dog’s
microchip or tattoo number along with either the dog’s registered name or registered number. Any test results that do not carry these identifying
features will not be recorded by the Kennel Club.
In order to ensure that test results are sent to the Kennel Club, customers must also sign the declaration section on the order form to give Laboklin permission to do so.
important:
When you sign the declaration, Laboklin will send the results to the KC on your behalf, and you do not need to send them to the KC yourself again to avoid unnecessary duplications.
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The Disease |
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Progressive retinal atrophy (PRA) as an inherited disease occurs in many dog breeds and also in different forms. The form of progressive rod-cone degeneration (prcd-PRA) is a photoreceptor degeneration in dogs with varying ages of onset. This genetic disorder causes the degeneration of retinal cells in the eye: firstly, rod cells are affected, thus leading to progressive night blindness. Secondly, degeneration of the cone cells results in complete blindness of the dog, even in full light situations during the day.
Age of onset of clinical symptoms is typically in early adolescence or early adulthood. However, the onset of the disease may vary among different dog breeds.
Since diagnosis of retinal diseases in dogs may prove difficult, the genetic test on prcd-PRA helps to diagnose a specific disease and is also a useful tool for breeders to eliminate the mutated gene from the dog population.
Please note that Lapponian Herder can be affected two other forms of PRA, the IFT122-PRA and the Canine Multi-Focal Retinopathy (CMR) which is caused by a mutation in the BEST1-gene. |
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Trait of Inheritance |
The mutation in the PRCD gene which has been suggested to cause prcd-PRA has recently been published by the group of Gustavo D. Aguirre at the University of Pennsylvania, USA, and could be found in several dog breeds.
Prcd-PRA is inherited as an autosomal recessive trait. So there are three conditions a dog can be: it can be clear (genotype N/N or homozygous normal) meaning that it does not carry the mutation and will not develop the prcd-form of PRA. Since it also cannot pass the mutation onto its offspring, it can be mated to any other dog.
A dog which has one copy of the PRCD gene with the mutation and one copy without the mutation is called a carrier or heterozygous (genotype N/PRA); while it will not be affected by prcd-PRA, it can pass the mutation onto its offspring and should therefore only be mated to clear dogs.
Dogs that develop this form of PRA have two PRCD gene copies with the mutation (genotype PRA/PRA or homozygous affected); they will always pass the mutated gene onto their offspring and should also be mated only to clear dogs.. |
Inheritance : AUTOSOMAL
RECESSIVE
trait
Sire
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Dam
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Offspring
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clear
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clear
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100% clear
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clear
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carrier
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50% clear + 50%
carriers
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clear
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affected
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100% carriers
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carrier
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clear
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50% clear + 50%
carriers
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carrier
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carrier
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25% clear + 25% affected
+ 50% carriers
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carrier
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affected
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50% carriers + 50%
affected
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affected
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clear
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100% carriers
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affected
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carrier
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50% carriers + 50%
affected
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affected
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affected
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100% affected
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Clear
Genotype: N / N [ Homozygous normal ]
The dog is noncarrier of the mutant gene.
It is very unlikely that the dog will develop Progressive Retinal Atrophy (prcd-PRA): (8094P / 8127). The dog will never pass the mutation to its offspring, and therefore it can be bred to any other dog.
Carrier
Genotype: N / PRA [ Heterozygous ]
The dog carries one copy of the mutant gene and one
copy of the normal gene.
It is very unlikely that the dog will develop Progressive Retinal Atrophy (prcd-PRA): (8094P / 8127) but since it carries the mutant gene, it can pass it on to its offspring with the probability of 50%. Carriers should only be bred to clear dogs. Avoid breeding carrier to carrier because 25% of their offspring is expected to be affected (see table above)
Affected
Genotype: PRA / PRA [ Homozygous mutant ]
The dog carries two copies of the mutant gene and
therefore it will pass the mutant gene to its entire offspring.
The dog is likely to develop Progressive Retinal Atrophy (prcd-PRA): (8094P / 8127) and will pass the mutant gene to its entire offspring
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Price
for the above 4 tests
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£ 138.00 (including VAT)
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