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The cream gene dilutes the basic coat colours (chestnut, bay and black) and leads to these coat colours: palomino, buckskin and smoky black if only one copy of the cream gene is present and cremello, perlino and smoky cream if two copies are present.

In donkeys, dominant white corresponds to complete depigmentation: the animal is born with a white coat, pink skin and dark eyes. A variant in the KIT gene, c.662A>C, was identified in a donkey showing this phenotype and is considered a candidate variant associated with dominant white. The genetic test can be used to detect this variant and identify animals that carry it. However, the available data remain preliminary, as this variant was observed in only one white donkey in the study.

The mutation of the MLPH gene leads to a dilution of the intensity of the coat colour. The black coat becomes blue, the orange becomes cream and the chocolate coat is diluted to lilac.

Locus I determines a dilution of the pheomelanin pigments (red or yellow pigment), resulting in a dilution of the fawn coat to cream, sand or white depending on the breed. The mutation does not affect the eumelanin pigments and therefore has no impact on the black or brown coat.

The E locus or extension refers to a mutation in the MC1R gene. For this test code, the mutation being tested is the e^2 mutation. In the Australian Cattle Dog, dogs with two copies of the e^1 or e^2 alleles or one copy of each allele will have a cream coat. For the e^1 allele and other breeds, see the following link: DOG-LOCUS-E.

Hypocatalasia (or acatalasemia) is a rare genetic disorder caused by a mutation in the CAT gene, leading to a severe deficiency of catalase. This enzyme normally protects tissues against oxidative stress. The c.979G>A (p.Ala327Thr) mutation was first identified in a Beagle colony and subsequently detected in pet Beagles. A homozygous dog notably developed oral cavity gangrene with tooth loss at a young age. The disease may remain clinically silent for a long time, which highlights the importance of genetic screening in breeding dogs.
This test is also recommended for the Basset Hound as part of the Flemish government breeding program (see the official program).

The PPARD gene is involved in mechanisms related to energy metabolism, fat utilisation and muscular endurance. In racing pigeons, a recent study suggests that certain variations in this gene may be linked to race performance, particularly return speed and ranking coefficient. The CC genotype for the PPARD c.*271C>T marker is the one that stands out most favourably in the study, notably because it was observed in pigeons taking part in a larger number of races. This test can therefore provide complementary information to guide the selection of breeding birds, without replacing the assessment of the pigeon, its lineage, training and actual racing results.