Abstract
Canine polygenic obesity can be influenced by relatively recent mutations with large effects. We determined whether, as with monogenic diseases, long autozygous tracts may be disproportionately likely to harbor detrimental variants for additive polygenic obesity in Labrador retriever dogs. Both our detection of runs of homozygosity (ROH) and our preliminary association study were based on whole-genome sequencing of 28 obese and 22 healthy dogs. We detected and analyzed the distribution of 19,655 ROH. We observed 237 and 98 ROH-harboring genotypes associated with obesity and increased body mass, respectively. We found no evidence that long ROH tend to harbor genotypes linked to obesity or increased body weight, and we concluded that data on ROH overlapping GWAS signals for canine obesity are unlikely to help prioritize candidate genes for validation studies.
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FASTQ files were submitted to the European Nucleotide Archive: study accession number PRJEB47658.
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This work was supported by the National Science Center, Poland (project no. 2016/23/B/NZ2/01762).
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Blood samples were collected in veterinary clinics during routine visits with the consent of the animals’ owners and with the approval of the local Bioethical Commission for Animal Care and Use in Poznań, Poland (31/2013).
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Communicated by: Marek Switonski
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Szydlowski, M., Antkowiak, M. No evidence that long runs of homozygosity tend to harbor risk variants for polygenic obesity in Labrador retriever dogs. J Appl Genetics 63, 557–561 (2022). https://doi.org/10.1007/s13353-022-00693-0
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DOI: https://doi.org/10.1007/s13353-022-00693-0