A benchmarking of human mitochondrial DNA haplogroup classifiers from whole-genome and whole-exome sequence data

Author:

García-Olivares VíctorORCID,Muñoz-Barrera AdriánORCID,Lorenzo-Salazar José MiguelORCID,Zaragoza-Trello CarlosORCID,Rubio-Rodríguez Luis A.ORCID,Díaz-de Usera AnaORCID,Jáspez DavidORCID,Campos Antonio IñigoORCID,González-Montelongo RafaelaORCID,Flores CarlosORCID

Abstract

AbstractThe mitochondrial genome (mtDNA) is of interest for a range of fields including evolutionary, forensic, and medical genetics. Human mitogenomes can be classified into evolutionary related haplogroups that provide ancestral information and pedigree relationships. Because of this and the advent of high-throughput sequencing (HTS) technology, there is a diversity of bioinformatic tools for haplogroup classification. We present a benchmarking of the 11 most salient tools for human mtDNA classification using empirical whole-genome (WGS) and whole-exome (WES) short-read sequencing data from 36 unrelated donors. Besides, because of its relevance, we also assess the best performing tool in third-generation long noisy read WGS data obtained with nanopore technology for a subset of the donors. We found that, for short-read WGS, most of the tools exhibit high accuracy for haplogroup classification irrespective of the input file used for the analysis. However, for short-read WES, Haplocheck and MixEmt were the most accurate tools. Based on the performance shown for WGS and WES, and the accompanying qualitative assessment, Haplocheck stands out as the most complete tool. For third-generation HTS data, we also showed that Haplocheck was able to accurately retrieve mtDNA haplogroups for all samples assessed, although only after following assembly-based approaches (either based on a referenced-based assembly or a hybrid de novo assembly). Taken together, our results provide guidance for researchers to select the most suitable tool to conduct the mtDNA analyses from HTS data.

Publisher

Cold Spring Harbor Laboratory

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