OMIA:001138-9615 : Hypocatalasia in Canis lupus familiaris (dog)

In other species: domestic guinea pig

Categories: Homeostasis / metabolism phene

Links to possible relevant human trait(s) and/or gene(s) in OMIM: 614097 (trait) , 115500 (gene)

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal

Considered a defect: yes

Key variant known: yes

Year key variant first reported: 2000

Cross-species summary: Catalase catalyses the decomposition of hydrogen peroxide to oxygen and water. Reduced levels of catalase can lead to hypocatalasemia / hypocatalasaemia or hypocatalasia and absence of catalase activity results in acatalasaemia / acatalasemia.

Molecular basis: By cloning and sequencing a very likely candidate gene (based on knowledge of the biochemical and physiological properties of the enzyme catalase in affected dogs), Nakamura et al. (2000) reported that the canine disorder in Beagles is due to a missense mutation [in the catalase gene (CAT),] leading to the substitution of alanine(327) (GCT) by threonine (ACT)".

Clinical features: Catalase is an enzyme responsible for breaking down reactive oxygen species. As there are other enzymes able to fulfil this role, hypocatalasia often has no clinical signs. Hypocatalasia has been associated with ulcers of the oral cavity leading to gangrene, a condition known as “Takahara disease” in humans (Fukuda et al., 1982). The pathogenesis of this disease is explained by some oral bacteria producing hydrogen peroxide, which is unable to be decomposed due to catalase deficiency (Ogata et al. 2008). IT thanks DVM student Joumana Quinn, who provided the basis of this contribution in May 2023.

Prevalence: Noting that the original discovery of the likely causal variant (c.979G>A; p.Ala327Thr) was in a Beagle colony, Donner et al. (2016) reported that "To our knowledge, presence and manifestation of acatalasemia due to the aforementioned CAT variant has not been previously documented in the pet Beagle population. We therefore note that we identified pet Beagle carriers, and a tenmonth-old mutant homozygous Beagle through panel screening. During this investigation, the genetically affected Beagle developed gangrene of the oral cavity leading to the removal of three teeth at the age of eighteen months, which could be a manifestation of acatalasemia". Donner et al. (2016, 2018) reported additional breeds in which the c.979G>A; p.Ala327Thr variant was present: American Foxhound (n=1), English Foxhound (n=1), Harrier 9 (n=6), Miniature Poodle (n=1), Treeing Walker Coonhound (n=2).

Breeds: American Foxhound (Dog) (VBO_0200047), Beagle (Dog) (VBO_0200131), English Foxhound (Dog) (VBO_0200490), Harrier (Dog) (VBO_0200660), Poodle, Miniature (Dog) (VBO_0201051), Treeing Walker Coonhound (Dog) (VBO_0201374).
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
CAT catalase Canis lupus familiaris 18 NC_051822.1 (34033703..33993703) CAT 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.

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
49 American Foxhound (Dog) Beagle (Dog) English Foxhound (Dog) Harrier (Dog) Poodle, Miniature (Dog) Treeing Walker Coonhound (Dog) Hypocatalasia CAT missense Naturally occurring variant CanFam3.1 18 g.33397548C>T c.979G>A p.(A327T) Variant initially identified in Beagle and later reported in additional breeds: PMID:29708978, PMID27525650 2000 11137458 Variant coordinates obtained from or confirmed by EBI's Some Effect Predictor (VEP) tool

Cite this entry

Nicholas, F. W., Tammen, I., & Sydney Informatics Hub. (2023). OMIA:001138-9615: Online Mendelian Inheritance in Animals (OMIA) [dataset].


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.

2023 Meadows, J.R.S., Kidd, J.M., Wang, G.D., Parker, H.G., Schall, P.Z., Bianchi, M., Christmas, M.J., Bougiouri, K., Buckley, R.M., Hitte, C., Nguyen, A.K., Wang, C., Jagannathan, V., Niskanen, J.E., Frantz, L.A.F., Arumilli, M., Hundi, S., Lindblad-Toh, K., Ginja, C., Agustina, K.K., André, C., Boyko, A.R., Davis, B.W., Drögemüller, M., Feng, X.Y., Gkagkavouzis, K., Iliopoulos, G., Harris, A.C., Hytönen, M.K., Kalthoff, D.C., Liu, Y.H., Lymberakis, P., Poulakakis, N., Pires, A.E., Racimo, F., Ramos-Almodovar, F., Savolainen, P., Venetsani, S., Tammen, I., Triantafyllidis, A., vonHoldt, B., Wayne, R.K., Larson, G., Nicholas, F.W., Lohi, H., Leeb, T., Zhang, Y.P., Ostrander, E.A. :
Genome sequencing of 2000 canids by the Dog10K consortium advances the understanding of demography, genome function and architecture. Genome Biol 24:187, 2023. Pubmed reference: 37582787. DOI: 10.1186/s13059-023-03023-7.
2018 Donner, J., Anderson, H., Davison, S., Hughes, A.M., Bouirmane, J., Lindqvist, J., Lytle, K.M., Ganesan, B., Ottka, C., Ruotanen, P., Kaukonen, M., Forman, O.P., Fretwell, N., Cole, C.A., Lohi, H. :
Frequency and distribution of 152 genetic disease variants in over 100,000 mixed breed and purebred dogs. PLoS Genet 14:e1007361, 2018. Pubmed reference: 29708978. DOI: 10.1371/journal.pgen.1007361.
2016 Donner, J., Kaukonen, M., Anderson, H., Möller, F., Kyöstilä, K., Sankari, S., Hytönen, M., Giger, U., Lohi, H. :
Genetic panel screening of nearly 100 mutations reveals new insights into the breed distribution of risk variants for canine hereditary disorders. PLoS One 11:e0161005, 2016. Pubmed reference: 27525650. DOI: 10.1371/journal.pone.0161005.
2008 Ogata, M., Wang, D.H., Ogino, K. :
Mammalian acatalasemia: the perspectives of bioinformatics and genetic toxicology. Acta Med Okayama 62:345-61, 2008. Pubmed reference: 19122680.
2000 Nakamura, K., Watanabe, M., Sasaki, Y., Ikeda, T. :
Purification and characterization of liver catalase in acatalasemic beagle dog: comparison with normal dog liver catalase. Int J Biochem Cell Biol 32:89-98, 2000. Pubmed reference: 10661897.
Nakamura, K., Watanabe, M., Takanaka, K., Sasaki, Y., Ikeda, T. :
cDNA cloning of mutant catalase in acatalasemic beagle dog: single nucleotide substitution leading to thermal-instability and enhanced proteolysis of mutant enzyme International Journal of Biochemistry & Cell Biology 32:1183-1193, 2000. Pubmed reference: 11137458.
1999 Nakamura, K., Watanabe, M., Ikeda, T., Sasaki, Y., Matsunuma, N. :
Tissue and organ expression of catalase in acatalasemic beagle dogs. Exp Anim 48:229-34, 1999. Pubmed reference: 10591001.
1982 Fukuda, K., Shindo, H., Yamashita, K., Mizuhira, V. :
Catalase activity of erythrocytes from beagle dog: an appearance of hereditary acatalasemia Acta Histochem. Cytochem. 15:685–690, 1982.
1967 Feinstein, R.N., Braun, J.T., Howard, J.B. :
The dog as an example of acatalasemia or hypocatalasemia. ANL-7409. ANL Rep :122, 1967. Pubmed reference: 5308206.

Edit History

  • Created by Frank Nicholas on 12 Sep 2005
  • Changed by Frank Nicholas on 12 Dec 2011
  • Changed by Frank Nicholas on 15 Sep 2012
  • Changed by Frank Nicholas on 21 Aug 2016
  • Changed by Imke Tammen2 on 08 Jun 2023
  • Changed by Imke Tammen2 on 09 Jun 2023