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Identification of SNP markers for canine mammary gland tumours in females based on a genome-wide association study – preliminary results Cover

Identification of SNP markers for canine mammary gland tumours in females based on a genome-wide association study – preliminary results

Open Access
|Sep 2023

Abstract

Introduction

The development of genetic research over recent decades has enabled the discovery of new genetic markers, such as single nucleotide polymorphisms (SNPs). This, as well as the full sequencing of the dog genome, has enabled genome-wide association studies (GWAS) to be used in the search for genetic causes of canine mammary tumours (CMTs).

Material and Methods

Genotypic data containing 175,000 SNPs, which had been obtained using the Illumina CanineHD BeadChip microarray technique, were available for analysis in this study. The data concerned 118 bitches, including 36 animals with CMT, representing various breeds and age groups. Statistical analysis was performed in two steps: quality control of genotyping data and genome-wide association analysis based on dominant, recessive, overdominant, codominant, and log-additive models with the single SNP effects.

Results

A total of 40 different SNPs significantly associated with CMT appearance were detected. Moreover, twelve SNPs showed statistical significance in more than one model. Of all the significant SNPs, two, namely BICF2G630136001 in the overdominant model and TIGRP2P107898_rs9044787 in the log-additive model, reached the 5−8 significance level. The other SNPs were significant to a 1−5 level.

Conclusion

In the group of SNPs indicated as significant in the GWAS analysis, several transpired to be localised within genes that may play an important role in CMT.

Language: English
Page range: 427 - 436
Submitted on: Jan 21, 2023
Accepted on: Jun 28, 2023
Published on: Sep 20, 2023
Published by: National Veterinary Research Institute in Pulawy
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2023 Anna Mucha, Błażej Nowak, Stanisław Dzimira, Bartłomiej Liszka, Magdalena Zatoń-Dobrowolska, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.