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Breeds Affected: Shiba Inu

Samples Accepted: Blood, Buccal Swabs

Disease Information: GM1 Gangliosidosis (GM1-G) is a fatal lysosomal storage disease. Affected Shiba Inu have predictable neurologic dysfunction and a clinical progression leading to death between 12-18 months of age.

Inheritance Information: GM1-G is autosomal recessive, meaning that animals with two copies of this allele will be affected. Animals with one copy of the gene will be clinically-normal carriers.

The possible genotypes are:
N/N The dog is normal, and cannot produce affected offspring.
N/gm1g The dog is a carrier, and can pass the allele on to approximately 50% of any offspring. If bred to another N/gm1g carrier, approximately 25% of the offspring will be normal, 50% will be carriers, and 25% will be affected.
gm1g/gm1g The dog is affected, and will not live long enough to reproduce.

– Carriers may be bred to normal animals (N/gm1g x N/N) without any risk of producing affected offspring. The offspring should be tested before breeding to determine if they are carriers or normal.
– Breeding two carriers (N/gm1g x N/gm1g) is not recommended due to the possibility of 25% of the offspring being affected.

Test Information: This mutation test identifies a single base pair deletion in exon 15 of the GLB1 gene.

Yamato, O., Jo, EO., Shoda, T., Yamasaki, M., Maede, Y.: Rapid and simple mutation screening of G(M1) gangliosidosis in Shiba dogs by direct amplification of deoxyribonucleic acid from various forms of canine whole-blood specimens. J Vet Diagn Invest 16:469-72, 2004. Pubmed reference: 15460336.

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

Test #: D126

Cost: 35 € (excl. VAT)

Time: 7-10 days

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