Progressive retinal atrophy 4, also known as CORD1, is a form of progressive retinal atrophy characterised by changes in the granular appearance of the fundus, followed by generalised tapetal hyperreflexia and retinal vascular attenuation with progressive extinction of the electroretinogram. CORD1 pathology is probably caused by a combination of mutations. Only the mutation in the RPGRIP1 gene is being tested.

Transmission

Autosomal recessive

Breed

Beagle, Bolonka, Clumber Spaniel, Curly Coated Retriever, English Springer Spaniel, Labrador Retriever, Long-haired dachshund, Miniature Dachshund, Shorthaired dachshund , Wirehaired dachshund