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Dominant Blue Eyes (DBE) in cats are typically associated with a lack of melanin in the iris.
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Specifications
| Breeds | |
|---|---|
| Gene | |
| Chromosome | C1 |
| Mutation | c.160del |
| Organ | |
| Specimen | Swab, Blood EDTA, Blood Heparin, Semen, Tissue |
| Mode of Inheritance | Autosomal Dominant |
| Also known as | DBE |
General information
Dominant Blue Eyes (DBE) in cats are typically associated with a lack of melanin in the iris. It is often due to genetics and is commonly seen in certain breeds. One of the genes involved in this trait is the Paired Box 3 (PAX3) gene. Mutations in the gene can result in white spotting, deafness, pigmentary disturbances in one or two eyes and in some cases also embryonic or fetal lethality.
There are multiple mutations known. The variant tested here, DBE Agosto, is found in Maine Coons (Agostino line) and is also know as DBE-AGO.
Clinical features
Cats with this mutation show one or two blue eyes or particolored eyes and minimal white spotting. This does not necessarily indicate any underlying health issues. In different feline breeding lines, deafness has been identified as possibly being associated with this trait.
Additional information
References
Pubmed ID: 40459211
Year published: 2025
Omia ID: 1688
Omia variant ID: