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W25 dominant white (W25)

Summary

W25 is a version of the KIT gene that produces a partial to completely white coat pattern. W25 is thought to have originated in an Australian Thoroughbred mare called Laughyoumay, born in 2001.

Laughyoumay has had at least two white colts, bred by Winning Colours Farm. The oldest, Luna Park, carries the frame overo gene as well as W25. He has blue eyes as well as a completely white coat. The younger colt, Great Caesar Ghost, is a medicine hat - white, with colour only on and around his ears. We hope to see many more colourful W25 horses in the future.

No horses have been identified yet carrying two copies of W25.

Gene or region and technical reference

Gene: KIT (causative). Reference: Hoban et al. (2018)

Reported alleles

n. Test developed using manufactured DNA, animal controls.

W25. Test developed using manufactured DNA, animal cases.

Panels: groups of tests that are often ordered together

This test is not in any panels.


horse

Laughyoumay, a Thoroughbred mare born in 2001. Thanks to Winning Colours Farm for providing samples for this research.

Order tests

There is a one-off sample processing fee of $40 per animal plus the cost of your tests.

How many animals are you testing? Discount or society code:


Pedigree

$33 A DNA profile ... more


Panels


Colour panels

$65 Dilutions panel ... more

$120 Full colour panel ... more

$70 Patterns panel ... more


Panels by breed

$100 Arabian health & colour ... more

$50 Arabian health panel ... more

$66 Fjord horse panel ... more

$50 Friesian health & colour ... more

$120 Gypsy health & colour ... more

$50 Miniature ACAN panel ... more

$250 Miniature health & colour ... more

$160 QH health & colour ... more

$90 QH health panel ... more

$65 Shetland Pony colour panel ... more


Good moves


Gaited horses

$9 Lateral gait marker ... more


Good looks


Coat colour

$9 Agouti (bay factor) (agouti) ... more

$9 Red/black ... more


Coat pattern

$9 Frame overo/lethal white syndrome (OLWS) ... more

$9 Grey/melanoma ... more

$9 Lp/Appaloosa/night blindness (Lp) ... more

$9 PATN1 coat pattern modifier (PATN1) ... more

$9 Roan marker ... more

$9 Sabino 1 ... more

$9 Splashed white 1/deafness (SW1) ... more

$9 Splashed white 2/deafness (SW2) ... more

$9 Splashed white 3/deafness (SW3) ... more

$9 Splashed white 5/deafness (SW5) ... more

$9 Tobiano ... more

$9 W13 dominant white (W13) ... more

$9 W20 white markings (W20) ... more

$9 W22 dominant white (W22) ... more

$9 W25 dominant white (W25)

$9 W26 dominant white (W26) ... more

$9 W27 dominant white (W27) ... more

$9 W34 white markings ... more


Pure- and part-bred Akhal-Tekes

$14 Naked foal syndrome (NFS) ... more


Pure- and part-bred Connemaras

$14 Hoof wall separation disease (HWSD) ... more


Good looks


Colour dilution

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$9 Dun and nd1 (dun/nd1) ... more

$9 Mushroom ... more

$9 Pearl ... more

$9 Taffy/silver/eye abnormalities (silver) ... more


Good health


Multiple breeds

$14 Cerebellar abiotrophy (CA) ... more

$14 Foal immunodeficiency syndrome (FIS) ... more

$14 Fragile foal syndrome (FFS) ... more

$9 Frame overo/lethal white syndrome (OLWS) ... more

$9 Grey/melanoma ... more

$9 Lp/Appaloosa/night blindness (Lp) ... more

$14 Ocular squamous cell carcinoma (SCC) ... more

$14 Polysaccharide storage myopathy 1 (PSSM1) ... more

$9 Splashed white 1/deafness (SW1) ... more

$9 Taffy/silver/eye abnormalities (silver) ... more


Pure- and part-bred Arabians

$14 Cerebellar abiotrophy (CA) ... more

$14 Lavender foal syndrome (LFS) ... more

$14 Occipitoatlantoaxial malformation (OAAM) ... more

$14 Severe combined immune deficiency (SCID) ... more


Pure- and part-bred Friesians

$14 Friesian distichiasis ... more

$14 Friesian dwarfism ... more

$14 Hydrocephalus ... more


Pure- and part-bred Miniature horses

$14 D1 form of Miniature dwarfism (D1) ... more

$14 D2 form of Miniature dwarfism (D2) ... more

$14 D3* form of Miniature dwarfism (D3*) ... more

$14 D4 form of Miniature dwarfism (D4) ... more

$100 Skeletal atavism (SA) ... more


Pure- and part-bred QH and/or Paint

$14 Glycogen branching enzyme deficiency (GBED) ... more

$14 Hereditary equine regional dermal asthenia (HERDA) ... more

$14 Hyperkalaemic periodic paralysis (HYPP) ... more

$14 Immune mediated myositis/myosin heavy-chain myopathy (IMM/MYHM) ... more

$14 Malignant hyperthermia (MH) ... more

$14 Polysaccharide storage myopathy 1 (PSSM1) ... more

$9 Splashed white 2/deafness (SW2) ... more

$9 Splashed white 3/deafness (SW3) ... more

$9 Splashed white 5/deafness (SW5) ... more


Pure- and part-bred Saddlebreds

$14 Junctional epidermolysis bullosa (JEB2) ... more

Tests can be in the list more than once when the gene in question has more than one effect. It is OK to select the same test once or more than once, the price is the same.