Search results for: 'DOG-PRA-PRCD'

Locus K or dominant black has 3 variants KB, Kbr and ky. The KB allele prevents the expression of the A or agouti locus, the coat colour is then determined by the B and E locus. The coat colour of dogs that are ky/ky will be determined by the A locus. The Kbr variant is responsible for the brindle coat but the mutation has not yet been identified.

The locus D or dilution refers to a mutation in the MLPH gene that causes a diluted coat colour. This mutation dilutes black to blue, chocolate to lilac and yellow to champagne. The mutation tested is the d^2 mutation and is specific to the Chow Chow, Sloughi and Thai Ridgeback breeds. For the other breeds, the test to be performed is the DOG-LOCUS-D test.

Amelogenesis imperfecta is a genetic disease affecting the tooth enamel in Parson Russell Terriers. It results in enamel that is dull, soft, and rough, leading to plaque buildup, gingivitis, and early tooth loss. The responsible mutation is found in approximately 9% of dogs.

This test is also recommended for Jack Russell Terriers as part of the breeding program established by the Flemish government (see official program).

Neuronal ceroid lipofuscinoses (NCLs) are a group of lysosomal storage diseases that affect the central nervous system, leading to early neuronal death and progressive neurodegeneration. NCL2 specifically affects dachshunds, with symptoms including vision loss, tremors, and coordination problems starting at a young age. Unfortunately, there is no known cure for NCL2, and affected dogs typically do not survive past 12 months of age.

The SLC6A3 PolyA(22) mutation, found in some Belgian Malinois, is linked to increased activity, stress-related behaviors, and episodic behavioral changes. Dogs with this mutation may show higher locomotor activity and sensitivity to environmental stress. Breeders should consider genetic testing for this mutation when selecting for behavior traits, while vets can use it to assess and manage behavior, especially aggression and stress. Identifying this mutation can aid in more targeted behavior management strategies.

Locus S identifies piebald/white spotting patterns in dogs. A particular mutation within the MITF gene is linked to piebald spotting, though its impact varies across breeds. In breeds such as Collies and Boxers, this mutation exhibits dosage-dependent effects, where one copy produces partial white patterns and two copies result in more extensive white. Conversely, in other breeds, piebald spotting follows a recessive pattern, necessitating two copies for manifestation.

Hereditary Nasal Parakeratosis (HNPK) in Labradors is a genetic disorder affecting the corneal layer of the nasal epidermis. Affected dogs show a thickened, dry, and rough nose, often with crusts and fissures, appearing at a young age. Histologically, it is characterized by diffuse parakeratotic hyperkeratosis with retention of nuclei in the stratum corneum and accumulation of proteinaceous fluids. Despite these skin symptoms, Labradors are otherwise healthy. This genetic test is patented and performed by a licensed laboratory.

Palmoplantar Keratoderma is a genetic condition that typically appears between 10 weeks and 1 year of age. Affected dogs develop painful thickening of the paw pads, with keratinous proliferations and fissures localized to the areas in contact with the ground. These fissures can lead to secondary infections and may cause lameness or reluctance to walk. The nails and other areas of the skin do not appear to be affected, and no other associated skin signs have been reported.

Golden Retriever muscular dystrophy is a homologue of Duchenne muscular dystrophy in humans. Affected dogs develop clinical signs at 8 to 10 weeks of age. Symptoms include a shuffling gait, inability to fully open the jaw, difficulty eating, curvature of the spine and ribs, resulting in a squatted posture. he disease is transmitted in an X-linked recessive manner, so males carrying the mutation will all be affected. However, only females with 2 copies of the mutated allele will be affected.

Unilateral deafness associated with a vestibular syndrome is a genetic condition linked to an abnormality of the inner ear. It can result in hearing loss on one side as well as balance disorders.

The observed clinical signs include head tilt, circling movements, lack of limb coordination, and abnormal eye movements.

In the Doberman, a disease presenting similar symptoms has been described and is associated with a mutation of the MYO7A gene. For more information, please consult the page: DOG-DINGS.