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BGI develops new strategy to uncover structural variations of human genomes
Date:7/25/2011

July 25, 2011 Shenzhen, China -- The study on single-nucleotide resolution structural variations (SVs) of an Asian and African genome was published online in Nature Biotechnology. This study was performed by BGI (previously known as the Beijing Genomics Institute), the largest genomics organization in the world, and demonstrates that whole genome de novo assembly could serve as a new solution for developing a more comprehensive SV map of individuals.

With the rapid development of genomics, more and more experts focus upon the studies of human genome variations by identification and annotation of SNPs in the context of structure, function, and disease. However, recent studies have shown that there are a large number of SVs that have been discovered in the human genome putatively having equal or greater functional impacts than SNPs.

Although many methods have been used to characterize SVs in previous studies, each may have some disadvantages due to technological limitations and the complexity of SVs, making it necessary to find a high accuracy detection method to identify and characterize SVs of human genomes.

"The research focusing on SVs is a real challenge," said Yingrui Li, Director of Science and Technology Department at BGI and the co-lead author of the study, "The study was confronted with many difficulties at the start, such as alignment accuracy, rearranged structure (non-linear), breakpoint recovery, and background noises."

"As a solution," he explained, 'researchers discovered a novel pipeline for detecting SVs in Whole Genome Assembly with a lower cost and faster speed." Based on large-scale genome assembly data from next-generation sequencing technologies, small and intermediate size homozygous SVs (1- 50kbp) can be detected, including insertions, deletions, inversions, and complex rearrangements with precise breakpoints and g
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Contact: Lei Su
BGI-Marketing@genomics.cn
86-075-525-283-805
Beijing Genomics Institute
Source:Eurekalert

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