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OMIA 000439-9844 : Hair, long in Lama glama

In other species: dog , domestic cat , ass , cattle , goat , rabbit , golden hamster , domestic guinea pig

Mendelian trait/disorder: yes

Considered a defect: no

Key variant known: yes

Year key variant first reported: 2017

Cross-species summary: Long hair = angora

Molecular basis: Daverio et al. (2017): "All animals analyzed were homozygous for one of the . . . [two likely causal variants, namely the haplotype comprising c.348delA and c.351_352insCATATAACATAG, or the [nonsense] variant c.499T] or compound heterozygous for both (i.e. c.348delA, c.351_352insCATATAACATAG/c.499T). Sequencing of guanaco samples showed that the FGF5 gene encodes a full-length 270-amino acid protein. These results suggest that FGF5 is likely functional in short-haired wild species and non-functional in the domestic fiber-producing species, the llama". Noting that the haplotype variant results in "a putative truncated protein of 123 amino acids" and the nonsense variant "leads to a premature stop codon at position 168", and "Sequencing of guanaco samples showed that the FGF5 gene encodes a full-length 270-amino acid protein", Daverio et al. (2017) concluded that "These results suggest that FGF5 is likely functional in short-haired wild species and non-functional in the domestic fiber-producing species, the llama".

Associated gene:

Symbol Description Species Chr Location OMIA gene details page Other Links
FGF5 Lama glama - no genomic information (-..-) FGF5 Ensembl

Variants

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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.

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
Long hair FGF5 complex rearrangement A "a single base deletion (c.348delA), [and] a 12-bp insertion (c.351_352insCATATAACATAG)" that comprise a single likely causal variant 2017 29024003
Long hair FGF5 nonsense (stop-gain) c.499C>T 2017 29024003
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Reference


2017 Daverio, M.S., Vidal-Rioja, L., Frank, E.N., Di Rocco, F. :
Molecular characterization of the llama FGF5 gene and identification of putative loss of function mutations. Anim Genet 48:716-719, 2017. Pubmed reference: 29024003. DOI: 10.1111/age.12616.

Edit History


  • Created by Frank Nicholas on 09 Apr 2018
  • Changed by Frank Nicholas on 11 Apr 2018