Journal
NATURE GENETICS
Volume 40, Issue 5, Pages 538-545Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ng.141
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Funding
- MRC [MC_U120085815, MC_U120061454] Funding Source: UKRI
- Medical Research Council [MC_U120061454, MC_U120085815] Funding Source: researchfish
- Howard Hughes Medical Institute Funding Source: Medline
- Medical Research Council [MC_U120085815, MC_U120061454] Funding Source: Medline
- NCI NIH HHS [CA77876, R01 CA077876] Funding Source: Medline
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The abundance and dynamics of copy number variants ( CNVs) in mammalian genomes poses new challenges in the identification of their impact on natural and disease phenotypes. We used computational and experimental methods to catalog CNVs in rat and found that they share important functional characteristics with those in human. In addition, 113 one-to-one orthologous genes overlap CNVs in both human and rat, 80 of which are implicated in human disease. CNVs are nonrandomly distributed throughout the genome. Chromosome 18 is a cold spot for CNVs as well as evolutionary rearrangements and segmental duplications, suggesting stringent selective mechanisms underlying CNV genesis or maintenance. By exploiting gene expression data available for rat recombinant inbred lines, we established the functional relationship of CNVs underlying 22 expression quantitative trait loci. These characteristics make the rat an excellent model for studying phenotypic effects of structural variation in relation to human complex traits and disease.
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