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Quite often you can find combinations of champagne with spotting or an Appaloosa-like pattern.
The ICHR separates a group of colors called triple dilutes. Here belongs the double cream champagne color described above, as well as other combinations of three dilution genes. For example, classic cream dun is a black-based horse carrying one gene of each: Cream, Dun, and Champagne. There are also other combinations, but their external differences are insignificant, and therefore, it is necessary to determine such colors by DNA analysis.
Inheritance Determined by the Champagne Gene
The Champagne mutation is a dominant allele in the gene SLC36A1 (solute carrier family 36, member 1) located in the fourteenth chromosome. The mutant allele dilutes both eumelanin and pheomelanin. Eumelanin under the influence of the mutant allele results in chocolate or yellowish-brown color, and pheomelanin results in in light orange or golden yellow. This Champagne allele has the symbol “Ch,” and the “wild” recessive allele is designated “ch.” There is a DNA test for the Champagne gene. The influence of the Champagne gene on color is described in Table 6.