Ratatosk: hybrid error correction of long reads enables accurate variant calling and assembly

A major challenge to long read sequencing data is their high error rate of up to 15%. We present Ratatosk, a method to correct long reads with short read data. We demonstrate on 5 human genome trios that Ratatosk reduces the error rate of long reads 6-fold on average with a median error rate as low...

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Published in:Genome Biology 2021-01, Vol.22 (1), p.28-28, Article 28
Main Authors: Holley, Guillaume, Beyter, Doruk, Ingimundardottir, Helga, Møller, Peter L, Kristmundsdottir, Snædis, Eggertsson, Hannes P, Halldorsson, Bjarni V
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Language:English
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Error correction & detection
Genomes
Genomics
Haplotypes
Method
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description A major challenge to long read sequencing data is their high error rate of up to 15%. We present Ratatosk, a method to correct long reads with short read data. We demonstrate on 5 human genome trios that Ratatosk reduces the error rate of long reads 6-fold on average with a median error rate as low as 0.22 %. SNP calls in Ratatosk corrected reads are nearly 99 % accurate and indel calls accuracy is increased by up to 37 %. An assembly of Ratatosk corrected reads from an Ashkenazi individual yields a contig N50 of 45 Mbp and less misassemblies than a PacBio HiFi reads assembly.
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subjects Error correction & detection
Genomes
Genomics
Haplotypes
Method
title Ratatosk: hybrid error correction of long reads enables accurate variant calling and assembly
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