Copy Number Variation across European Populations
Author Information
Author(s): Chen Wanting, Hayward Caroline, Wright Alan F., Hicks Andrew A., Vitart Veronique, Knott Sara, Wild Sarah H., Pramstaller Peter P., Wilson James F., Rudan Igor, Porteous David J.
Primary Institution: University of Edinburgh
Hypothesis
To investigate copy number variants from genome-wide scans of single nucleotide polymorphisms in three European population isolates.
Conclusion
The study found that while overall copy number variant frequencies are similar between populations, their distribution is highly specific to the population of origin.
Supporting Evidence
- 70.4% of individuals in the study were found to be CNV carriers.
- 4016 CNVs were detected across the three populations.
- 94.1% of CNVs overlapped with previously reported CNVs in the Database of Genomic Variants.
Takeaway
Scientists looked at DNA differences in people from three different places in Europe and found that even though the number of differences was similar, where those differences were located was unique to each group.
Methodology
The study used Illumina whole genome data with more than 300,000 SNPs from each of three European population isolates to detect and compare copy number variants.
Potential Biases
Potential biases may arise from the specific population isolates studied, which may not represent broader genetic diversity.
Limitations
The study's findings may be limited by the SNP coverage of the genotyping platform used, which may not capture all CNVs.
Participant Demographics
Participants were from three European population isolates: the island of Vis in Croatia, the Orkney Islands in Scotland, and South Tyrol in Italy.
Statistical Information
P-Value
p<2.2*10−16
Statistical Significance
p<2.2*10−16
Digital Object Identifier (DOI)
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