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von Willebrand disease Type III (vWD III)

Test number: 80143

vWD

Breeds
Scottish Terrier , Shetland Sheepdog (Sheltie) , Dutch Kooiker (Kooikerhondje ) .
Kennel Club
This test is part of the Official UK Kennel Club DNA Testing Scheme in Shetland Sheepdog (Sheltie) , and Dutch Kooiker (Kooikerhondje ).
The Disease
The Disease and its major types
Von Willebrand disease (vWD) is the most common inherited bleeding disorder, which is highly heterogeneous ranging from an asymptomatic laboratory abnormality to a life threatening bleeding. The condition is caused by a quantitative or qualitative deficiency of von Willebrand factor (vWF). Von Willebrand's disease vWD usually comes in two major types, type I and type III. Type III is a severe bleeding disorder with a high risk of spontaneous bleeding as well as a risk of serious bleeding from trauma and surgery. It is probably best known in Scotch Terriers. The Shetland Sheep Dogs have also the severe type III vWD.
Trait of Inheritance
vWD Type III is inherited in an autosomal recessive trait. This means that a dog can be genetically clear (also called homozygous normal), a carrier (also called heterozygous) or affected concerning vWD type III. Especially the carriers can spread the diseased gene in the population. Therefore reliable information of dogs that do not carry disease genes is the key to controlling this disease.

Inheritance : AUTOSOMAL RECESSIVE trait


 

Sire

 

Dam

 

Offspring

         
clear
clear
100% clear
         
clear
carrier
50%  clear + 50% carriers
         
clear
affected
100% carriers
         
carrier
clear
50%  clear + 50% carriers
         
carrier
carrier
25% clear + 25% affected + 50% carriers
         
carrier
affected
50% carriers + 50% affected
         
affected
clear
100%  carriers
         
affected
carrier
50% carriers + 50% affected
         
affected
affected
100% affected

 


Clear

Genotype: N / N [ Homozygous normal ]

The dog is noncarrier of the mutant gene.

It is very unlikely that the dog will develop von Willebrand disease Type III (vWD III). The dog will never pass the mutation to its offspring, and therefore it can be bred to any other dog.

 

Carrier

Genotype: N / vWD [ 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 von Willebrand disease Type III (vWD III) 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: vWD / vWD [ 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 von Willebrand disease Type III (vWD III) and will pass the mutant gene to its entire offspring
Description

The protein factor assay
The vWD test available in the past has been an assay of von Willebrand factor protein. It is fairly reliable in detecting affected animals, (those with two copies of the defective gene, and at risk for bleeding), because these animals usually have a very low level of the factor. But this test is very unreliable in differentiating gene carriers from clear animals. (Clear dogs are dogs with two copies of the normal gene). Further, many environmental factors influence the protein factor assay. Thus, a dog that tested in the 'normal' range one year could have a low value in the (carrier) range the next year. As a result breeders have not had much success breeding out this disease, which was frustrating to them.
The mutation-based 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 DNA test can be done at any age and unambiguously classify dogs for the rest of their lives into affected, carrier, and clear animals. With this test the breeder can rapidly eliminate the vWD disease gene from the breed. If a particularly valuable dog turns out to be a carrier, it can be bred to a clear animal, and non-carrier puppies saved for the next round of breeding.
The frequency of carriers was estimated to be that about 11% of Shetland Sheep Dogs are carriers of the type III vWD mutation. This is a significant health burden, and it would be good to get rid of this disease gene by using the DNA test. It should be emphasised that carriers will be clinically normal, and can be used as pets. As said above, if a carrier has excellent breed characteristics, it can be bred to a clear animal, and only clear animals among the progeny be used for further breeding.

Sample Requirements
Whole blood in EDTA tube (0.5 - 1 ml) or Buccal Swabs. Whole blood in EDTA tube (0.5 - 1 ml) or Buccal swabs. .
Turnaround
2 - 3 weeks
Price
£ 78.00 (including VAT)

To order:

  • Download Order Form from this link pdf

  • Complete the order form and send it together with your samples to the following address:

    Laboklin (UK),   125 Northenden Road, Manchester, M33 3HF

See Also:
Copper Toxicosis (Copper Storage Disease )  
Progressive Retinal Atrophy (Dominant PRA)  
Globoid Cell Leukodystrophy (Krabbe Disease)  
CSNB (Congenital Stationary Night Blindness)  
CLAD (Canine Leukocyte Adhesion Deficiency)  
Cystinuria  
von Willebrand disease Type II (vWD II)  
PK Deficiency (Pyruvate Kinase Deficiency)  
Fucosidosis  
PFK Deficiency (Phosphofructokinase deficiency)  
Myotonia Congenita  
MH (Malignant Hyperthermia)  
X-Linked Severe Combined Immunodeficiency (X-SCID)  
GM1-Gangliosidosis  
Narcolepsy  
Muscular Dystrophy (MD)  
MPS ( Mucopolysaccharidosis type VII)  
Hereditary Myopathy / Centronuclear Myopathy (HMLR, CNM)  
Canine Cyclic Neutropenia (Gray Collie Syndrome)  
Progressive Retinal Atrophy (cord1- PRA)not recommended for diagnosis  
L-2-HGA ( L- 2 - hydroxyglutaric aciduria )  
von Willebrand disease Type I (vWD I)  
Neuronal Ceroid Lipofuscinosis ( CL / NCL )  
Trapped Neutrophil Syndrome ( TNS )  
Progressive Retinal Atrophy (crd PRA)  
PDP 1 Deficiency (Pyruvate Dehydrogenase Phosphatase 1 Deficiency)  
Factor VII Deficiency  
Progressive Retinal Atrophy (rcd1 PRA)  
Progressive Retinal Atrophy (rcd3 PRA)  
Progressive Retinal Atrophy (rcd1a PRA)  
MDR1 Gene Defect / Ivermectin Sensitivity *  
Exercise Induced Collapse ( EIC )  
Dwarfism (Pituitary Dwarfism / Hypopituitarism)  
Degenerative Myelopathy / Degenerative Radiculomyelopathy) DM (Exon 2)  
Greyhound Neuropathy (Hereditary Neuropathy)  
Brittle Bone Disease (Osteogenesis Imperfecta)  
Glycogen Storage Disease (GSDllla)  
Hereditary Cataract (HSF4)  
Neonatal encephalopathy (NE / NEWS)  
Haemophilia B (factor IX deficiency)  
JEB (Junctional Epidermolysis bullosa)  
Primary Lens Luxation (PLL)  
Brachyury (Bobtail Gene / Short Tail)  
Familial Nephropathy (FN) / Hereditary Nephropathy *  
Startle Disease (SD) / Hyperekplexia  
Familial Nephropathy (FN) / Hereditary Nephropathy  
Myostatin Mutation ("Bully" Whippet)/ Double Muscling  
Hereditary Nephritis / Samoyed Hereditary Glomerulopathy  
Episodic Falling in Cavalier King Charles Spaniel (EF)  
Dry Eye and Curly Coat syndrome (CCS)  
Episodic Falling + Dry Eye Curly Coat syndrome  
Haemophilia A (factor VIII deficiency)  
Congenital Hypothyreosis / hypothyroidism (CHG)  
Hereditary Nasal Parakeratosis (HNPK)  
Juvenile Epilepsy (JE)  
Musladin-Lueke syndrome (MLS)  
Ichthyosis *  
Neonatal Cortical Cerebellar Abiotrophy (NCCD)  
Dwarfism (Skeletal Dysplasia 2)  
Primary Open Angle Glaucoma (POAG)  
Progressive Retinal Atrophy (generalized PRA)  
Progressive Retinal Atrophy (GR-PRA1)  
Progressive retinal atrophy ( rcd4-PRA) / LOPRA  
Alaskan Malamute Polyneuropathy (AMPN / IPAM / HPAM)  
Pug Dog Encephalitis (PDE) / Necrotizing Meningoencephalitis (NME)  
Polycystic Kidney Disease (PKD)  
Pompe's Disease (Glycogen Storage Disease type II / GSDII)  
Primary ciliary dyskinesia (PCD)  
Protein Losing Nephropathy (PLN)  
Late Onset Ataxia (LOA)  
Cobalamin Malabsorption (Imerslund-Gräsbeck syndrome (IGS))  
Collie Eye Anomaly (CEA) / Choroidal Hypoplasia (CH) Option 2 Optigen*  
Retinal Dysplasia (RD) / Oculo Skeletal Dysplasia (OSD)*  
Spinocerebellar ataxia (SCA)  
Cystinuria (Dominant)  
pap-PRA1 (Progressive Retinal Atrophy)  
Progressive Retinal Atrophy (BAS PRA)  
CMSD (Canine Multiple System Degeneration)  
Hereditary Cataract (HSF4) *  
Special offer 4: Juvenile Epilepsy + Furnishing + LSD  
Progressive Retinal Atrophy (prcd-PRA) Option 2: Optigen (8094X)  
Progressive Retinal Atrophy (prcd-PRA) Option 1: (8094P)  
Thrombopathia (Thrombopathy)  
Digital Hyperkeratosis (DH) (Hereditary Footpad Hyperkeratosis / Corny Feet)  
Degenerative Myelopathy / degenerative radiculomyelopathy) DM (Exon 1)  
Degenerative Myelopathy / degenerative radiculomyelopathy) DM (Exon 1 + Exon 2)  
Ectodermal Dysplasia / Skin Fragility Syndrome (ED / SFS)  
Hypomyelination (Shaking Puppy Syndrome) SPS  
Type A PRA * Optigen)  
Late Onset Ataxia (LOA) + Spinocerebellar Attaxia (SCA)  
Late Onset Ataxia (LOA) + Spinocerebellar Attaxia (SCA) + PLL  
Leonberger Polyneuropathy 1 ( LPN1)  
Adult Onset Neuropathy * (AON)  
Hereditary Ataxia (HA)  
Finnish Hound Ataxia / Cerebellar Ataxia (FHA / CAFH)  
Dandy-Walker-Like Malformation (DWLM)  
Persistent Müllerian duct syndrome (PMDS)  
Cone Degeneration (CD) by OptiGen *  
Fanconi Syndrome (FS) *  
Lagotto Storage Disease (LSD)  
Juvenile Laryngeal Paralysis & Polyneuropathy (JLPP)  
Progressive Retinal Atrophy (CNGA1 PRA)  
Achromatopsia (day blindness)  
Progressive Retinal Atrophy (GR-PRA2)  
Unspecified test  
Postoperative Hemorrhage (P2Y12 / P2RY12)  
Glanzmann Thrombasthenia (Thrombasthenia, Thrombasthenic thrombopathia, GT)  
Prekallikrein Deficiency (KTK) / Fletcher Factor Deficiency  
C3 Deficiency (Complement Component 3 deficiency)  
Congenital Myasthenic Syndrome (CMS)  
Bardet Biedl Syndrome (BBS)  
GM2 Gangliosidosis Variant 0 (Sandhoff Disease)  
Macrothrombocytopenia ( MTC-D )  
Renal Cystadenocarcinoma and Nodular Dermatofibrosis (RCND)  
Vitamin D-dependent Rickets (HVDRR)  
Amelogenesis Imperfecta (AI) / Familial Enamel Hypoplasia (FEH)  
X-linked Myotubular Myopathy (XLMTM)  
Collie Eye Anomaly (CEA) / Choroidal Hypoplasia (CH) Option 1*  
Macrothrombocytopenia ( MTC- R )  
Muscular Dystrophy (MDL)  
Mucopolysaccharidosis type IIIa (MPS IIIA)  
Neuroaxonal Dystrophy ( NAD )  
Progressive Retinal Atrophy (rcd2-PRA) Option 1 by Laboklin  
Ichthyosis ( Epidermolytic Hyperkeratosis (EHK) )  
May-Hegglin Anomaly (MHA)  
Alaskan Husky Encephalopathy (AHE)  
Cerebral Dysfunction (CDF)  
Dwarfism ( Chondrodysplasia )  
Ichthyosis (Congenital Ichthyosis / Great Dane Ichthyosis)  
Hemorrhagic Diathesis / Bleeding Diathesis (Canine Scott Syndrom)  
Glycogen storage disease type Ia (GSD Ia) / VON Grieke Disease  
Gallbladder Mucoceles  
Primary Hyperoxaluria type I (PH I)  
Hyperuricosuria / Urate Stones (HUU, SLC)  
Severe Combined Immunodeficiency (SCID)  
Leukocyte Adhesion Deficiency type III (LAD III)  
Cleft Lip / Palate and Syndactyly (CLPS)  
Progressive Retinal Atrophy (crd1 PRA)  
Progressive Retinal Atrophy (CRD2 PRA)  
Spondylocostal Dysostosis (Comma Defect)  
Canine Multi-Focal Retinopathy (CMR)  
Craniomandibular Osteopathy (CMO)  
Retinal Dysplasia (RD) / Oculo Skeletal Dysplasia (OSD)*  
Special Offer: DM (Exon 2) + MDR1  
Special Offer Chinese Crested: PLL + prcd PRA Option 1 + rcd3 PRA + DM Exon 2  
Warbung Micro Syndrome 1 (WARBM1)  
Raine Syndrome  
van den Ende-Gupta Syndrom (VDEGS)  
Lundehund-Syndrome ( Lymphagetasia )  
Obesity / Adiposity ( ADI )  
Alexander Disease (AxD) / Leukodystrophy  
Spinal Dysraphism / Neural Tube Defects ( NTD )  
Spongy Degeneration with Cerebellar Ataxia ( SDCA1 )  
XL - PRA (Progressive retinal Atrophy)  
Nemaline Myopathy (NM)  
Beagle DNA Bundle : IGS + MLS + NCCD + Osteogenesis imperfecta + PK + POAG  
Poodle DNA Bundle: DM exon2 + MH + NE + prcd-PRA option 1 + vWD1  
Golden Retriever DNA bundle: GR-PRA1 + GR-PRA2 + Ichthyosis + prcd-PRA option 1 + Muscular Dystrophy (MD)  
Pug Special Offer: DM Exon2 + MH + PDE / NME + PK + PLL  
Aussie DNA bundle: CEA option * + DM exon2 + HSF4 + MDR1 + MH + NCL + prcd-PRA Option 1*  
Collie DNA Bundle: CEA Option 1 + DM exon2 + HUU (SLC) + MDR1 + rcd2-PRA  
Border Collie DNA Bundle: CEA Option 1 + IGS + MDR1 + MH + NCL + TNS  
Pack A: CNM + DM exon2 + EIC + HNPK + OSD option 1 + prcd-PRA option 1 + SD2  
Pack B: AxD + Cystinuria + Narcolepsy + Obesity + PK + SLC + XL-MTM  
Ichthyosis  
Catalase Deficiency ( CAT ) / Hypocatalasemia / Acatalasia  
Juvenile Myoclonic Epilepsy ( JME )  
Paroxysmal Dyskinesia ( PxD )  
Spongy Degeneration with Cerebellar Ataxia ( SDCA2 )  
Belgian Shepherd Special Offer : SDCA1 + SDCA2  
Sensory Neuropathy ( SN )  
Acute Respiratory Distress Syndrome ( ARDS )  
POAG / PLL Primary Open Angle Glaucoma (POAG) and Primary Lens Luxation (PLL)  

 
 
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