Glitter Coat in Cats

Glitter Coat in Cats

The glitter coat in cats is a distinctive trait characterised by a sparkling, light‑reflective sheen across the fur. Unlike pigmentation‑based coat colour traits, glitter results from structural changes in the hair shaft, not from differences in melanin. The altered structure causes individual hairs to refract light differently, producing an iridescent or “gold‑dust” shimmer. This trait has been described primarily in the Bengal, Egyptian Mau, and Toyger, where it is considered a desirable cosmetic feature.

Research has identified a variant in the fibroblast growth factor receptor 2 (FGFR2) gene associated with the glitter phenotype. FGFR2 plays an important role in embryonic development, including the formation of skin and hair follicles. The identified variant leads to a mild reduction in FGFR2 activity, which alters the microscopic structure of the hair shaft. These structural changes influence how light is reflected, producing the characteristic glitter effect. Cats carrying this variant often have a softer, finer, and silkier coat texture. The FGFR2 glitter variant is considered purely cosmetic and is not associated with known health concerns.

Inheritance

The glitter trait is inherited in an autosomal recessive manner. Cats must inherit two copies of the FGFR2 variant to express the glitter phenotype. Cats with only one copy are carriers and typically do not show visible glitter, but they can pass the variant to their offspring. When two carriers are bred together, glitter‑coated kittens may appear, meaning the trait can remain hidden in breeding lines for several generations. The degree of shimmer can vary between individuals and may be influenced by coat type, hair length, and environmental factors such as lighting.

Relevant tests

• K308