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• W2029849394 abstract "Abstract Background With the advent of paired-end high throughput sequencing, it is now possible to identify various types of structural variation on a genome-wide scale. Although many methods have been proposed for structural variation detection, most do not provide precise boundaries for identified variants. In this paper, we propose a new method, D istribution B ased detection of D uplication B oundaries (DB 2 ), for accurate detection of tandem duplication breakpoints, an important class of structural variation, with high precision and recall. Results Our computational experiments on simulated data show that DB 2 outperforms state-of-the-art methods in terms of finding breakpoints of tandem duplications, with a higher positive predictive value (precision) in calling the duplications’ presence. In particular, DB 2 ’s prediction of tandem duplications is correct 99% of the time even for very noisy data, while narrowing down the space of possible breakpoints within a margin of 15 to 20 bps on the average. Most of the existing methods provide boundaries in ranges that extend to hundreds of bases with lower precision values. Our method is also highly robust to varying properties of the sequencing library and to the sizes of the tandem duplications, as shown by its stable precision, recall and mean boundary mismatch performance. We demonstrate our method’s efficacy using both simulated paired-end reads, and those generated from a melanoma sample and two ovarian cancer samples. Newly discovered tandem duplications are validated using PCR and Sanger sequencing. Conclusions Our method, DB 2 , uses discordantly aligned reads, taking into account the distribution of fragment length to predict tandem duplications along with their breakpoints on a donor genome. The proposed method fine tunes the breakpoint calls by applying a novel probabilistic framework that incorporates the empirical fragment length distribution to score each feasible breakpoint. DB 2 is implemented in Java programming language and is freely available at http://mendel.gene.cwru.edu/laframboiselab/software.php ." @default.
• W2029849394 created "2016-06-24" @default.
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• W2029849394 date "2014-03-05" @default.
• W2029849394 modified "2023-10-14" @default.
• W2029849394 title "DB2: a probabilistic approach for accurate detection of tandem duplication breakpoints using paired-end reads" @default.
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• W2029849394 doi "https://doi.org/10.1186/1471-2164-15-175" @default.
• W2029849394 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4234483" @default.
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