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Breeds Affected: Australian Shepherd

Samples Accepted: Blood, Buccal Swabs

Disease Information: PHC is an eye disease with an early-onset, usually between 2 – 4 months of age.  Opaque cataracts are usually fully covering both eyes by 2 – 3 years of age, resulting in full blindness.

Inheritance Information: PHC in the Australian Shepherd is autosomal dominant, meaning that animals with just one copy of this allele will be affected. 50% of their offspring will also be affected.

The possible genotypes are for Australian Shepherds are:
n/n The dog is normal, and cannot produce affected offspring.

n/PHC The dog is affected, and 50% of the offspring will be affected.

PHC/PHC The dog is affected with PHC, and 100% of the offspring will also be affected.

– Affected animals (n/PHC, PHC/PHC) should not be used for breeding.

Test Information: A mutation in HSF4 is causative for PHC in Australian Shepherds

Mellersh, CS., Mclaughlin, B., Ahonen, S., Pettitt, L., Lohi, H., Barnett, KC.: Mutation in HSF4 is associated with hereditary cataract in the Australian Shepherd. Vet Ophthalmol 12:372-8, 2009. Pubmed reference: 19883468. DOI: 10.1111/j.1463-5224.2009.00735.x.

Further information is available at the Online Mendelian Inheritance in Animals website.

Test #: D315b

Cost: 35 € (excl. VAT)

Time: 7-10 days

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