The quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencing

Abstract This study evaluates long-read and short-read sequencing for mitochondrial DNA (mtDNA) heteroplasmy detection. 592,315 bootstrapped datasets generated from two single-nucleotide mismatched ultra-deep sequenced mtDNA samples were used to assess basecalling error and accuracy, limit of hetero...

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Main Authors: Barbara Slapnik, Robert Šket, Klementina Črepinšek, Tine Tesovnik, Barbara Jenko Bizjan, Jernej Kovač
Format: Article
Language:English
Published: Nature Portfolio 2024-11-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-024-78270-0
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author Barbara Slapnik
Robert Šket
Klementina Črepinšek
Tine Tesovnik
Barbara Jenko Bizjan
Jernej Kovač
author_facet Barbara Slapnik
Robert Šket
Klementina Črepinšek
Tine Tesovnik
Barbara Jenko Bizjan
Jernej Kovač
author_sort Barbara Slapnik
collection DOAJ
description Abstract This study evaluates long-read and short-read sequencing for mitochondrial DNA (mtDNA) heteroplasmy detection. 592,315 bootstrapped datasets generated from two single-nucleotide mismatched ultra-deep sequenced mtDNA samples were used to assess basecalling error and accuracy, limit of heteroplasmy detection, and heteroplasmy detection across various coverage depths. Results showed high Phred scores of data with GC-rich sequence bias for long reads. Limit of detection of 12% heteroplasmy was identified, showing strong correlation (R2 ≥ 0.955) with expected heteroplasmy but underreporting tendency of high-level variants. Nanopore sequencing shows potential for direct applicability in mitochondrial diseases diagnostics, but stringent validation processes to ensure diagnostic result quality are required.
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institution Kabale University
issn 2045-2322
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spelling doaj-art-82b7807f8a204fae9861eef7fd4647dd2024-11-10T12:21:23ZengNature PortfolioScientific Reports2045-23222024-11-0114111210.1038/s41598-024-78270-0The quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencingBarbara Slapnik0Robert Šket1Klementina Črepinšek2Tine Tesovnik3Barbara Jenko Bizjan4Jernej Kovač5Clinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre LjubljanaClinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre LjubljanaClinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre LjubljanaClinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre LjubljanaClinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre LjubljanaClinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre LjubljanaAbstract This study evaluates long-read and short-read sequencing for mitochondrial DNA (mtDNA) heteroplasmy detection. 592,315 bootstrapped datasets generated from two single-nucleotide mismatched ultra-deep sequenced mtDNA samples were used to assess basecalling error and accuracy, limit of heteroplasmy detection, and heteroplasmy detection across various coverage depths. Results showed high Phred scores of data with GC-rich sequence bias for long reads. Limit of detection of 12% heteroplasmy was identified, showing strong correlation (R2 ≥ 0.955) with expected heteroplasmy but underreporting tendency of high-level variants. Nanopore sequencing shows potential for direct applicability in mitochondrial diseases diagnostics, but stringent validation processes to ensure diagnostic result quality are required.https://doi.org/10.1038/s41598-024-78270-0mtDNAHeteroplasmyMitochondrial diseaseLong-read sequencing
spellingShingle Barbara Slapnik
Robert Šket
Klementina Črepinšek
Tine Tesovnik
Barbara Jenko Bizjan
Jernej Kovač
The quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencing
Scientific Reports
mtDNA
Heteroplasmy
Mitochondrial disease
Long-read sequencing
title The quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencing
title_full The quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencing
title_fullStr The quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencing
title_full_unstemmed The quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencing
title_short The quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencing
title_sort quality and detection limits of mitochondrial heteroplasmy by long read nanopore sequencing
topic mtDNA
Heteroplasmy
Mitochondrial disease
Long-read sequencing
url https://doi.org/10.1038/s41598-024-78270-0
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