OMIA:000439-9793 : Hair, long in Equus asinus (ass (donkey))

In other species: dog , domestic cat , Arabian camel , llama , taurine cattle , goat , sheep , rabbit , golden hamster , domestic guinea pig , domestic yak , alpaca

Categories: Integument (skin) phene

Links to possible relevant human trait(s) and/or gene(s) in OMIM: 190330 (trait) , 165190 (gene)

Links to relevant human diseases in MONDO:

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal recessive

Considered a defect: no

Key variant known: yes

Year key variant first reported: 2014

Cross-species summary: Long hair = angora

Molecular basis: Legrand et al. (2014) "identified a recessive c.433_434delAT frameshift deletion in FGF5, present in Poitou and three other donkey breeds and a recessive nonsense c.245G > A substitution, present in Poitou and four other donkey breeds. The frameshift deletion was associated with the long-hair phenotype in Poitou donkeys when present in two copies (n = 31) or combined with the nonsense mutation (n = 4). The frameshift deletion led to a stop codon at position 159 whereas the nonsense mutation led to a stop codon at position 82 in the FGF5 protein. In silico, the two truncated FGF5 proteins were predicted to lack the critical β strands involved in the interaction between FGF5 and its receptor, a mandatory step to inhibit hair growth."

Breed: Poitou (Ass) (VBO_0000058).
Breeds in which the phene has been documented. (If a likely causal variant has been documented for the phene, see the variant table breeds in which the variant has been reported).

Associated gene:

Symbol Description Species Chr Location OMIA gene details page Other Links
FGF5 fibroblast growth factor 5 Equus asinus 3 NC_052179.1 (161372969..161394000) FGF5 Homologene, Ensembl , NCBI gene


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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 Year Published PubMed ID(s) Acknowledgements
347 Âne de Provence, France (Ass) Âne des Pyrénées, France (Ass) Âne grand noir du Berry, France (Ass) Âne normand, France (Ass) Hair, long FGF5 nonsense (stop-gain) Naturally occurring variant ASM1607732v2 3 NC_052179.1:g.161373495G>A XM_014836312.2:c.245G>A XP_014691798.1:p.W82* 2014 25927731
560 Âne Bourbonnais, France (Ass) Âne des Pyrénées, France (Ass) Âne normand, France (Ass) Poitou (Ass) Hair, long FGF5 deletion, small (<=20) Naturally occurring variant ASM1607732v2 3 NC_052179.1:g.161381098_161381099del XM_014836312.2:c.433_434del XP_014691798.1:p.M145Vfs*15 2014 25927731

Cite this entry

Nicholas, F. W., Tammen, I., & Sydney Informatics Hub. (2016). OMIA:000439-9793: Online Mendelian Inheritance in Animals (OMIA) [dataset].


2014 Legrand, R., Tiret, L., Abitbol, M. :
Two recessive mutations in FGF5 are associated with the long-hair phenotype in donkeys. Genet Sel Evol 46:65, 2014. Pubmed reference: 25927731. DOI: 10.1186/s12711-014-0065-5.

Edit History

  • Created by Frank Nicholas on 15 Sep 2016
  • Changed by Frank Nicholas on 15 Sep 2016