Donate
Progressive Retinal Atrophy Autosomal Dominant (ADPRA)
Breeds
Relevance Rating: There is some evidence or research available for these breeds
Relevance Rating: The test is unknown, there is no evidence (i.e. research) available, or it has not been evaluated yet. These tests may or may not be meaningful in this breed
GTPs
General
Disease Name
Progressive Retinal Atrophy Autosomal Dominant (ADPRA)
OMIA
1346
Gene Name
RHO
Mutation
c.11C>G
Mutation 2
p.Thr4Arg
Test Type
Genetic Disease/Disorder
Details
As detailed by Kijas et al. (2002), vision is normal for the first few months, but by 12-18 months, vision loss is spreading slowly with particular problems for the dog moving between different light levels. Homozygotes (two copies of the abnormal gene) have more severe clinical signs than heterozygotes (one copy of the abnormal gene).
Details 2
From Kijas et al. (2002), rod vision is normal for at least the first few months. But by 12-18 months, degeneration is evident, spreading slowly from a disease focus in one retinal region. In addition, there is an abnormally slow recovery of rod photoreceptor function after exposure to light. Homozygotes have more severe clinical signs than heterozygotes.
Published
Kijas, JW., Miller, BJ., Pearce-Kelling, SE., Aguirre, GD., Acland, GM.: Canine models of ocular disease: outcross breedings define a dominant disorder present in the English mastiff and bull mastiff dog breeds. J Hered 94:27-30, 2003. Pubmed reference: 12692159.
Published 2
Iwabe, S., Ying, G.S., Aguirre, G.D., Beltran, W.A. : Assessment of visual function and retinal structure following acute light exposure in the light sensitive T4R rhodopsin mutant dog. Exp Eye Res 146:341-353, 2016. Pubmed reference: 27085210. DOI: 10.1016/j.exer.2016.04.006.
Body/System/Process
Eye
OMIA Url
Inheritance
AD
Breed Specific Info
Researched Breeds
English Mastiff
