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W26 dominant white (W26)

Summary

W26 is a version of the KIT gene that produces a partial to completely white coat pattern. W26 is thought to have originated in an Australian Thoroughbred mare called Marbrowell, born in 1997.

Marbrowell has produced one white filly, Maybe Maybelline. This filly carries the frame overo gene as well as W26. Maybe Mabelline has one blue eye and a completely white coat. She has recently produced her own filly foal, a medicine hat palomino. We hope to see many more colourful W26 horses in the future.

W26 appears to have arisen on a W20 allele, so all W26 horses will also test positive for at least one copy of W20.

No horses have been identified yet carrying two copies of W26.

Gene or region and technical reference

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

Reported alleles

n. Test developed using manufactured DNA, animal controls.

W26. Test developed using manufactured DNA, animal cases.

Panels: groups of tests that are often ordered together

This test is not in any panels.


horse

Marbrowell, a Thoroughbred mare born in 1997. Thanks to Winning Colours Farm for providing samples for this research.

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$33 DNA profile ... more


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$120 Full colour panel ... more

$70 Patterns panel ... more


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$90 QH health 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 (CSNB) ... more

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

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

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

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

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

$9 W25 dominant white (W25) ... more

$9 W26 dominant white (W26)

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


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Paint horses

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


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


Good health


Multiple breeds

$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 (CSNB) ... more

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

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

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


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


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$140 Skeletal atavism (SA) ... more


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