Instruct: Identify the main category of Biorxiv papers based on the titles and abstracts
Query: Improved sequence mapping using a complete reference genome and lift-over Complete, telomere-to-telomere genome assemblies promise improved analyses and the discovery of new variants, but many essential genomic resources remain associated with older reference genomes. Thus, there is a need to translate genomic features and read alignments between references. Here we describe a new method called levioSAM2 that accounts for reference changes and performs fast and accurate lift-over between assemblies using a whole-genome map. In addition to enabling the use of multiple references, we demonstrate that aligning reads to a high-quality reference (e.g. T2T-CHM13) and lifting to an older reference (e.g. GRCh38) actually improves the accuracy of the resulting variant calls on the old reference. By leveraging the quality improvements of T2T-CHM13, levioSAM2 reduces small-variant calling errors by 11.4-39.5% compared to GRC-based mapping using real Illumina datasets. LevioSAM2 also improves long-read-based structural variant calling and reduces errors from 3.8-11.8% for a PacBio HiFi dataset. Performance is especially improved for a set of complex medically-relevant genes, where the GRC references are lower quality. The software is available at https://github.com/milkschen/leviosam2 under the MIT license.
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The categories of this paper are: ecology
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The categories of this paper are: synthetic
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The categories of this paper are: genetics
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The categories of this paper are: pharmacology
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The categories of this paper are: microbiology
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The categories of this paper are: and
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The categories of this paper are: biophysics
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The categories of this paper are: plant
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The categories of this paper are: developmental
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The categories of this paper are: immunology
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The categories of this paper are: pathology
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The categories of this paper are: zoology
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The categories of this paper are: biochemistry
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The categories of this paper are: animal
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The categories of this paper are: cell
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The categories of this paper are: communication