Comment on "DNA damage is a pervasive cause of sequencing errors, directly confounding variant identification"
Chip Stewart1, Ignaty Leshchiner1, Julian Hess1
1Broad Institute of MIT and Harvard, Cambridge, MA 02124, USA.
Abstract:
Chen et al (Reports, 17 February 2017, p. 752) highlight an important problem of sequencing artifacts caused by DNA damage at the time of sample processing. However, their manuscript contains several errors that led the authors to incorrect conclusions. Moreover, the same sequencing artifacts were previously described and mitigated in The Cancer Genome Atlas and other published sequencing projects.
Insights
Sequencing artifacts from DNA damage can affect research findings. Previous studies, including The Cancer Genome Atlas, have already identified and addressed these DNA sequencing issues.
Area of Science:
- Genomics
- Molecular Biology
- Bioinformatics
Background:
- DNA damage during sample processing can introduce sequencing artifacts.
- These artifacts may lead to erroneous conclusions in genetic studies.
- Previous research has identified and mitigated similar artifacts.
Purpose of the Study:
- To critically evaluate the findings presented by Chen et al. regarding DNA sequencing artifacts.
- To address errors in the manuscript by Chen et al.
- To highlight prior work on sequencing artifacts.
Main Methods:
- Review of the manuscript by Chen et al.
- Comparison with established protocols and findings from large-scale sequencing projects.
- Analysis of DNA damage-induced sequencing errors.
Main Results:
- The manuscript by Chen et al. contains factual errors.
- The conclusions drawn by Chen et al. are not supported due to these errors.
- The sequencing artifacts discussed were previously identified and managed.
Conclusions:
- The findings by Chen et al. are flawed due to methodological errors and overlooked prior research.
- The problem of DNA damage-induced sequencing artifacts is recognized and has been addressed in major genomics initiatives.
- Researchers should be aware of existing literature on sequencing artifact mitigation.
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