Affected Gene: PDE6A
Inheritance: Autosomal Recessive
Mutation: CanFam3.1 4g.59145362del c.1847del (delA)
OMIA link: 001314-9615

Appropriate breeds for testing: Chinese Crested Dog, Welsh Corgi Cardigan, Welsh Corgi Pembroke

References:
Donner J, Kaukonen M, Anderson H, Moller F, Kyostila K, Sankari S, Hytonen M, Giger U, Lohi H. Genetic Panel Screening of Nearly 100 Mutations Reveals New Insights into the Breed Distribution of Risk Variants for Canine Hereditary Disorders. PLoS One. 2016 Aug 15;11(8):e0161005.
Petersen-Jones SM, Entz DD. An improved DNA-based test for detection of the codon 616 mutation in the alpha cyclic GMP phosphodiesterase gene that causes progressive retinal atrophy in the Cardigan Welsh Corgi. Vet Ophthalmol. 2002 Jun;5(2):103-6.