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Progressive Retinal Atrophy (PRA) is a large group of genetic diseases in which the retina gradually degenerates over time, causing a progressive loss of vision.
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General information
Progressive Retinal Atrophy (PRA) is a large group of genetic diseases in which the retina gradually degenerates over time, causing a progressive loss of vision. This variant of PRA, found in the Papillon and Phalène, is caused by a recessive mutation to the gene CNGB1. The mutation is estimated to account for approximately 70% of PRA cases in these breeds.
Clinical features
Affected dogs display typical symptoms of PRA, including night blindness, sudden bouts of apparent clumsiness, other signs of vision loss and increased reflectivity of the eyes. This variant of PRA is typically diagnosed around 4 years of age.
Additional information
The variant analysed in this test is not the only possible cause of PRA in the Papillon and Phalène.
References
Pubmed ID:
Omia ID: 830
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