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Published on: October 18, 2013
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A comparative study of single nucleotide variant detection performance using three massively parallel sequencing
Linea Christine Trudsø1, Jeppe Dyrberg Andersen1, Stine Bøttcher Jacobsen1
1Section of Forensic Genetics, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
Plos One
|September 28, 2020
Summary
Whole genome sequencing (WGS) offers superior variant detection performance compared to whole exome sequencing (WES) and HaloPlex target enrichment sequencing (HES). WGS provides more uniform coverage, enhancing accuracy in genetic variant analysis for research and clinical applications.
Area of Science:
- Genetics
- Genomic Medicine
- Molecular Biology
Background:
- Massively parallel sequencing (MPS) technologies, including whole genome sequencing (WGS), whole exome sequencing (WES), and targeted gene sequencing (TGS), are pivotal in human genetics research and clinical diagnostics.
- The increasing integration of MPS into genetic laboratory workflows necessitates a thorough evaluation of the performance characteristics of different sequencing approaches.
Purpose of the Study:
- To compare the single nucleotide variant (SNV) detection performance of three distinct MPS methods: WGS, WES, and HaloPlex target enrichment sequencing (HES).
- To assess the variant detection capabilities across 100 genes linked to cardiomyopathies and channelopathies using matched DNA from 10 individuals.
Main Methods:
- Comparative analysis of variant detection results from whole genome sequencing (WGS), whole exome sequencing (WES), and HaloPlex target enrichment sequencing (HES).
- Evaluation of sequencing coverage uniformity and sensitivity for single nucleotide variant (SNV) detection across 100 specific genes.
- Utilized DNA samples from 10 individuals with matched data across all three sequencing methods.
Main Results:
- Whole genome sequencing (WGS) demonstrated superior overall performance compared to whole exome sequencing (WES) and HaloPlex target enrichment sequencing (HES).
- WGS exhibited more uniform and widespread coverage across investigated regions, unlike WES and HES, which showed right-skewed coverage and challenges with high GC-content regions.
- WGS and WES achieved comparable high sensitivities for SNV detection, while HES exhibited lower sensitivity attributed to a higher rate of false negatives.
Conclusions:
- Whole genome sequencing (WGS) is the preferred MPS method for comprehensive and accurate variant detection, particularly in complex genetic regions.
- Whole exome sequencing (WES) offers high sensitivity comparable to WGS, making it a viable option for targeted exonic variant analysis.
- HaloPlex target enrichment sequencing (HES) shows limitations in coverage uniformity and sensitivity, potentially leading to missed variant calls in genetic analyses.
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