Curly coat c2 (KRT71-related) - Dog

What does this test analyse?

This genetic test analyses the KRT71 c.1266_1273delinsACA variant, also known as curly coat c2, curly coat, a curl coat variant or a KRT71 curl allele. KRT71 encodes keratin 71, a structural protein involved in hair follicle shape and hair-shaft growth.

The c2 variant is a small delins variant in KRT71. It can change hair structure and contribute to a wavy to clearly curly coat. The final appearance still depends on the dog’s complete coat genetics. Hair length and furnishings in particular can determine whether the effect appears subtle, wavy or strongly curly.

What does curly coat c2 mean for the dog?

Curly coat c2 is an inherited coat trait, not a disease. It is useful in breeds and lines where curl, wave or a specific coat texture matters for selection, breed type or breeding plans. Because appearance does not always reveal all underlying alleles, a dog can carry important genetic information without showing it fully.

Practical value of this test

This test helps breeders plan coat texture more deliberately and explain puppy coat expectations more clearly.

• The result shows whether the dog carries no copy, one copy or two copies of the c2 allele.
• Breeders can better predict curly and wavy coat in lines where KRT71 variants occur.
• The test helps identify hidden c2 carriers and steer desired or undesired coat combinations.
• Combined with hair-length and furnishings tests, the result gives a more complete view of the expected coat.
• The DNA result supports clearer communication with puppy buyers about coat type, grooming expectations and breeding goals.

Inheritance and interpretation

The c2 variant behaves as autosomal incomplete dominant. One copy can give a wavy or intermediate coat; two copies push more strongly toward curly coat. Other coat genes remain important for how clearly the effect is expressed.