OMIA 002229-9940 : Hypotrichosis, HR-related in Ovis aries

In other species: domestic cat , bottlenosed dolphin , long-beaked common dolphin , beluga whale , Indo-Pacific finless porpoise , Yangtze River dolphin , minke whale , Omura's baleen whale

Possibly relevant human trait(s) and/or gene(s) (MIM number): 146550

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal Recessive

Considered a defect: yes

Key variant known: yes

Year key variant first reported: 2003

Cross-species summary: Also known as Hairless

Species-specific name: Absence of all or part of the wool coat

Mapping: Using FISH, Finocchiaro et al. (2008) physically mapped the HR locus in sheep to chromosome OAR2p21-22.

Molecular basis: By cloning and sequencing a very likely comparative candidate gene (based on the homologous human and mouse disorder), Finocchiaro et al. (2003) discovered the likely causal variant to be a nonsense mutation, namely "a C/T transition at position 1312" of the ovine HR gene, giving rise to p.Gln438Ter.

Associated gene:

Symbol Description Species Chr Location OMIA gene details page Other Links
HR hair growth associated Ovis aries 2 NC_040253.1 (45696851..45716036) HR Homologene, Ensembl, NCBI gene


By default, variants are sorted chronologically by year of publication, to provide a historical perspective. Readers can re-sort on any column by clicking on the column header. Click it again to sort in a descending order. To create a multiple-field sort, hold down Shift while clicking on the second, third etc relevant column headers.

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.

Breed(s) Variant Phenotype Gene Allele Type of Variant Reference Sequence Chr. g. or m. c. or n. p. Verbal Description EVA ID Year Published PubMed ID(s) Acknowledgements
Valle del Belice Hypotrichosis HR nonsense (stop-gain) Oar_v3.1 2 g.43224867C>T c. 1312C>T p.Q438* rs423413166 2003 12927087 Variant coordinates obtained from or confirmed by EBI's Some Effect Predictor (VEP) tool


Note: the references are listed in reverse chronological order (from the most recent year to the earliest year), and alphabetically by first author within a year.
2008 Finocchiaro, R., Castiglioni, B., Budelli, E., van Kaam, J.B., Portolano, B., Caroli, A., Pagnacco, G. :
Chromosomal assignment of the ovine hairless (hr) gene by fluorescence insitu hybridization. Hereditas 145:258-61, 2008. Pubmed reference: 19076694. DOI: 10.1111/j.1601-5223.2008.02062.x.
2003 Finocchiaro, R., Portolano, B., Damiani, G., Caroli, A., Budelli, E., Bolla, P., Pagnacco, G. :
The hairless (hr) gene is involved in the congenital hypotrichosis of Valle del Belice sheep Genetics Selection Evolution 35:S147-56, 2003. Pubmed reference: 12927087. DOI: 10.1051/gse:2003023.

Edit History

  • Created by Frank Nicholas on 27 Jan 2020
  • Changed by Frank Nicholas on 27 Jan 2020