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Updated: Jun 16, 2026
11:02
Detecting Somatic Genetic Alterations in Tumor Specimens by Exon Capture and Massively Parallel Sequencing
Published on: October 18, 2013
19.4K
Monitoring the rate and variability of somatic genomic alterations using long-read sequencing
Xingyao Chen1, Hagai Ligumsky1, Charlie Ambrose1
1Ellison Medical Institute, Los Angeles, CA, USA.
Scientific Reports
|June 11, 2025
Summary
Cancer develops from accumulated DNA mutations. Longitudinal whole genome sequencing reveals somatic mutation accumulation increases with age and can be tracked over months, aiding personalized cancer prevention.
Area of Science:
- Genomics
- Cancer Biology
- Personalized Medicine
Background:
- Cancer arises from accumulated somatic mutations in DNA during cell division.
- The body has safeguards against mutations, but some can lead to cancer.
- Understanding mutation dynamics is key to cancer prevention.
Purpose of the Study:
- To investigate the dynamics of somatic mutation accumulation over time.
- To assess the utility of long-read sequencing for longitudinal mutation detection.
- To identify patterns of mutation changes related to age and sampling intervals.
Main Methods:
- Longitudinal whole genome sequencing of DNA from whole blood.
- Utilized Oxford Nanopore Technologies' Long Read Sequencing.
- Analyzed somatic single nucleotide variants and molecular signatures.
Main Results:
- Somatic mutation load increases with participant age.
- Specific mutational processes show detectable changes within months.
- Identified age- and time-dependent patterns of variant accumulation.
Conclusions:
- Long-read sequencing of blood DNA is effective for detecting temporal changes in somatic mutations.
- Findings support the development of personalized cancer prevention strategies based on mutation dynamics.
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