The identification of the p.C2Y mutation (OMIM: 610598.0001) in the PRCD gene is another illustrative example of the benefits of using canine genetics to find homologous candidate genes for human retinal dystrophies; the PRCD gene was initially mapped and identified in PRA-affected dogs and subsequently in a human family with RP [17]. This evidence concerns the gene PRCD and inherited retinal dystrophy.