OMIA 000202-9689 : Coat colour, oculocutaneous albinism type I (OCA1), TYR-related in Panthera leo
In other species: domestic cat , cattle , dog , rabbit , water buffalo , ass , Japanese medaka , American mink , humpback whale , domestic ferret , pig , domestic guinea pig , Tufted capuchin , dark-spotted frog , Japanese wrinkled frog , Rice frog , Mongolian gerbil , red fox , hamadryas baboon , red deer , Japanese raccoon dog , Japanese ratsnake
Category: Pigmentation phene
Links to MONDO diseases: No links.
Mendelian trait/disorder: yes
Mode of inheritance: Autosomal recessive
Considered a defect: no
Key variant known: yes
Year key variant first reported: 2013
Cross-species summary: Congenital lack of pigment in most parts of the body. Due to a non-functional form of the enzyme tyrosinase. Also known as Oculocutaneous albinism (OCA), Acromelanism and as the Himalayan coat-colour pattern
Molecular basis: Cho et al. (2013) reported c.260G>A (p.Arg87Gln) as a likely causal variant for the "white lion" phenotype, reporting complete concordance of this variant with the genotyping results from "47 lions: 17 of white phenotype and 30 of wild phenotype, of which 11 were known to be carriers (heterozygotes) based on their pedigree, 14 of unknown genetic makeup, and 5 of wild phenotype from control populations where no white lions were found". FN thanks Corinne Benavides for alerting him to this discovery.
|Symbol||Description||Species||Chr||Location||OMIA gene details page||Other Links|
|TYR||Panthera leo||-||no genomic information (-..-)||TYR||Ensembl|
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WARNING! Inclusion of a variant in this table does not automatically mean that it should be used for DNA testing. Anyone contemplating the use of any of these variants for DNA testing should examine critically the relevant evidence (especially in breeds other than the breed in which the variant was first described). If it is decided to proceed, the location and orientation of the variant sequence should be checked very carefully.
Since October 2021, OMIA includes a semiautomated lift-over pipeline to facilitate updates of genomic positions to a recent reference genome position. These changes to genomic positions are not always reflected in the ‘acknowledgements’ or ‘verbal description’ fields in this table.
|OMIA Variant ID||Breed(s)||Variant Phenotype||Gene||Allele||Type of Variant||Source of Genetic Variant||Reference Sequence||Chr.||g. or m.||c. or n.||p.||Verbal Description||EVA ID||Inferred EVA rsID||Year Published||PubMed ID(s)||Acknowledgements|
|1011||White lion||TYR||missense||Naturally occurring variant||c.260G>A||p.(R87Q)||2013||24045858|
|2013||Cho, Y.S., Hu, L., Hou, H., Lee, H., Xu, J., Kwon, S., Oh, S., Kim, H.M., Jho, S., Kim, S., Shin, Y.A., Kim, B.C., Kim, H., Kim, C.U., Luo, S.J., Johnson, W.E., Koepfli, K.P., Schmidt-Küntzel, A., Turner, J.A., Marker, L., Harper, C., Miller, S.M., Jacobs, W., Bertola, L.D., Kim, T.H., Lee, S., Zhou, Q., Jung, H.J., Xu, X., Gadhvi, P., Xu, P., Xiong, Y., Luo, Y., Pan, S., Gou, C., Chu, X., Zhang, J., Liu, S., He, J., Chen, Y., Yang, L., Yang, Y., He, J., Liu, S., Wang, J., Kim, C.H., Kwak, H., Kim, J.S., Hwang, S., Ko, J., Kim, C.B., Kim, S., Bayarlkhagva, D., Paek, W.K., Kim, S.J., O'Brien, S.J., Wang, J., Bhak, J. :|
|The tiger genome and comparative analysis with lion and snow leopard genomes. Nat Commun 4:2433, 2013. Pubmed reference: 24045858. DOI: 10.1038/ncomms3433.|
- Created by Frank Nicholas on 06 Sep 2018
- Changed by Frank Nicholas on 06 Sep 2018