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Novel Sequence Discovery by Subtractive Genomics
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ERINS: Novel Sequence Insertion Detection by Constructing an Extended Reference.

Xiguo Yuan, Xiangyan Xu, Haiyong Zhao

    IEEE/ACM Transactions on Computational Biology and Bioinformatics
    |November 22, 2019
    PubMed
    Summary
    This summary is machine-generated.

    ERINS is a new method for detecting novel sequence insertions (nsINS) of all sizes using next-generation sequencing. It accurately characterizes large nsINSs, outperforming existing tools in sensitivity and precision.

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    Area of Science:

    • Genomics
    • Bioinformatics
    • Computational Biology

    Background:

    • Next-generation sequencing (NGS) enables novel sequence insertion (nsINS) detection.
    • Current methods struggle with characterizing nsINSs larger than the mean insert size.
    • Accurate detection of nsINSs is crucial for understanding genome evolution and disease.

    Purpose of the Study:

    • To present ERINS, a novel method for detecting nsINS content and genotypes across a full spectrum of sizes.
    • To improve the characterization of large nsINSs that are challenging for existing tools.

    Main Methods:

    • ERINS integrates structural variation and split read mapping features to identify nsINS breakpoints.
    • A left-most mapping strategy is employed to infer nsINS content by extending the reference genome.
    • Reads are realigned to the extended reference, and genotypes are inferred via statistical testing.

    Main Results:

    • ERINS demonstrates superior sensitivity and precision compared to peer methods in simulation experiments.
    • Real data application shows high consistency with previous findings and successful detection of nsINSs over 200 base pairs.
    • ERINS effectively identifies large nsINSs missed by other methods.

    Conclusions:

    • ERINS provides a robust approach for characterizing nsINSs of all sizes.
    • It serves as a valuable supplement to existing nsINS detection tools.
    • ERINS is poised to become a routine method for comprehensive nsINS analysis.