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Article

A Nonsense Variant in Hephaestin Like 1 (HEPHL1) Is Responsible for Congenital Hypotrichosis in Belted Galloway Cattle

1
Department of Farm Animals, Vetsuisse-Faculty, University of Zurich, 8057 Zurich, Switzerland
2
Laboratory of Molecular Genetics, Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
3
Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano Emilia, Italy
4
Institute of Genetics, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland
5
UTIA Genomics Center for the Advancement of Agriculture, Institute of Agriculture, University of Tennessee, Knoxville, TN 37996, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally.
These authors jointly supervised this work.
Academic Editor: Emilia Bagnicka
Genes 2021, 12(5), 643; https://doi.org/10.3390/genes12050643
Received: 6 April 2021 / Revised: 17 April 2021 / Accepted: 19 April 2021 / Published: 26 April 2021
(This article belongs to the Section Animal Genetics and Genomics)
Genodermatosis such as hair disorders mostly follow a monogenic mode of inheritance. Congenital hypotrichosis (HY) belong to this group of disorders and is characterized by abnormally reduced hair since birth. The purpose of this study was to characterize the clinical phenotype of a breed-specific non-syndromic form of HY in Belted Galloway cattle and to identify the causative genetic variant for this recessive disorder. An affected calf born in Switzerland presented with multiple small to large areas of alopecia on the limbs and on the dorsal part of the head, neck, and back. A genome-wide association study using Swiss and US Belted Galloway cattle encompassing 12 cases and 61 controls revealed an association signal on chromosome 29. Homozygosity mapping in a subset of cases refined the HY locus to a 1.5 Mb critical interval and subsequent Sanger sequencing of protein-coding exons of positional candidate genes revealed a stop gain variant in the HEPHL1 gene that encodes a multi-copper ferroxidase protein so-called hephaestin like 1 (c.1684A>T; p.Lys562*). A perfect concordance between the homozygous presence of this most likely pathogenic loss-of-function variant and the HY phenotype was found. Genotyping of more than 700 purebred Swiss and US Belted Galloway cattle showed the global spread of the mutation. This study provides a molecular test that will permit the avoidance of risk matings by systematic genotyping of relevant breeding animals. This rare recessive HEPHL1-related form of hypotrichosis provides a novel large animal model for similar human conditions. The results have been incorporated in the Online Mendelian Inheritance in Animals (OMIA) database (OMIA 002230-9913). View Full-Text
Keywords: Bos taurus; hypotrichosis simplex; hair; development; dermatology; monogenic; genodermatosis Bos taurus; hypotrichosis simplex; hair; development; dermatology; monogenic; genodermatosis
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MDPI and ACS Style

Kuca, T.; Marron, B.M.; Jacinto, J.G.P.; Paris, J.M.; Gerspach, C.; Beever, J.E.; Drögemüller, C. A Nonsense Variant in Hephaestin Like 1 (HEPHL1) Is Responsible for Congenital Hypotrichosis in Belted Galloway Cattle. Genes 2021, 12, 643. https://doi.org/10.3390/genes12050643

AMA Style

Kuca T, Marron BM, Jacinto JGP, Paris JM, Gerspach C, Beever JE, Drögemüller C. A Nonsense Variant in Hephaestin Like 1 (HEPHL1) Is Responsible for Congenital Hypotrichosis in Belted Galloway Cattle. Genes. 2021; 12(5):643. https://doi.org/10.3390/genes12050643

Chicago/Turabian Style

Kuca, Thibaud, Brandy M. Marron, Joana G.P. Jacinto, Julia M. Paris, Christian Gerspach, Jonathan E. Beever, and Cord Drögemüller. 2021. "A Nonsense Variant in Hephaestin Like 1 (HEPHL1) Is Responsible for Congenital Hypotrichosis in Belted Galloway Cattle" Genes 12, no. 5: 643. https://doi.org/10.3390/genes12050643

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