Mammalian Genome

, Volume 17, Issue 4, pp 340–345 | Cite as

Linkage analysis with an interbreed backcross maps Dalmatian hyperuricosuria to CFA03

  • Noa Safra
  • Robert H. Schaible
  • Danika L. Bannasch


Dalmatians, like humans, excrete uric acid in their urine. All other dogs and most mammals excrete allantoin, a water-soluble compound that is further along the purine degradation pathway. Excretion of uric acid at high concentrations (hyperuricosuria) predisposes Dalmatians to the formation of urinary urate calculi. Hyperuricosuria (huu) is found in all Dalmatians tested and is inherited as an autosomal recessive trait. A genome scan and linkage analysis performed on a Dalmatian × Pointer interbreed backcross detected a single linked marker, REN153P03, located on CFA03. Haplotype analysis of the region around this marker defined a 3.3-Mb interval flanked by single recombination events. This interval, which contains the huu mutation, is estimated to include 24 genes.


Uric Acid UCSC Genome Browser Allantoin Recombination Breakpoint Urate Oxidase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors thank Aaron Wong for his help with calculating the genome scan LOD scores, and the canine research group at the UC Davis Veterinary Genetics Laboratory for providing the multiplexed genotyping panels.

Supplementary material

supp.pdf (18 kb)
Supplementary material


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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Noa Safra
    • 1
  • Robert H. Schaible
    • 2
  • Danika L. Bannasch
    • 1
  1. 1.Department of Population Health and Reproduction School of Veterinary MedicineUniversity of CaliforniaDavisUSA
  2. 2.Department of Veterinary Clinical Sciences, School of Veterinary MedicinePurdue UniversityWest LafayetteUSA

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