OMIA:000439-10141 : Hair, long in Cavia porcellus (domestic guinea pig)

In other species: dog , domestic cat , ass (donkey) , Arabian camel , llama , taurine cattle , goat , sheep , rabbit , golden hamster , 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: 2018

Cross-species summary: Long hair = angora

Inheritance: Yu et al. (2018): "This mutation was genotyped by direct sequencing analysis in 141 short‐haired and 70 long‐haired individuals. We found 104 homozygous CC and 37 heterozygous CT short‐haired individuals, whereas all long‐haired individuals were homozygous TT, indicating that the long‐haired phenotype is inherited as a recessive trait as in other mammalian species."

Molecular basis: By sequencing the obvious comparative candidate gene, Yu et al. (2018) discovered a likely causal variant for long-haired guinea pigs to be "a nonsense mutation (c.403C>T, p.Arg135Xaa) in exon 2 [of FGF5] . . . , which leads to a truncated protein of 134 amino acids."

Associated gene:

Symbol Description Species Chr Location OMIA gene details page Other Links
Fgf5 fibroblast growth factor 5 Cavia porcellus NW_026947487.1 (65364926..65345766) 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
982 Long hair Fgf5 nonsense (stop-gain) Naturally occurring variant c.403C>T p.(R135*) "The data were submitted to the European Variation Archive (accession no. PRJEB24997)" 2018 29603294

Cite this entry

Nicholas, F. W., Tammen, I., & Sydney Informatics Hub. (2020). OMIA:000439-10141: Online Mendelian Inheritance in Animals (OMIA) [dataset].


2018 Yu, F., Liu, Z., Jiao, S., Zhang, X., Bai, C., Zhang, J., Yan, S., Yu, F., Liu, Z., Jiao, S., Zhang, X., Bai, C., Zhang, J., Yan, S. :
A nonsense mutation in the FGF5 gene is associated with the long-haired phenotype in domestic guinea pigs (Cavia porcellus). Anim Genet 49:269, 2018. Pubmed reference: 29603294. DOI: 10.1111/age.12656.

Edit History

  • Created by Frank Nicholas on 09 Apr 2018
  • Changed by Frank Nicholas on 09 Apr 2018
  • Changed by Frank Nicholas on 15 May 2020