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Updated: May 13, 2026

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Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Practical applications for epigenetic biomarkers in cancer diagnostics
Ashley G Rivenbark1, William B Coleman
1University of North Carolina School of Medicine, Department of Biochemistry and Biophysics, Chapel Hill, North Carolina 27599, USA.
Expert Opinion on Medical Diagnostics
|March 16, 2013
Summary
Epigenetic biomarkers, specifically DNA methylation patterns, show promise for early cancer detection and personalized treatment. These biomarkers can be detected non-invasively, aiding in cancer screening and outcome prediction.
Area of Science:
- Oncology
- Molecular Diagnostics
- Epigenetics
Background:
- Cancer is a major global health challenge requiring advanced diagnostic tools.
- Current needs include early detection, personalized treatment, and outcome prediction for cancer patients.
- Non-invasive molecular diagnostics utilizing sensitive biomarkers are ideal for cancer testing.
Purpose of the Study:
- To explore the potential of epigenetic biomarkers for molecular cancer diagnostics.
- To highlight the role of DNA methylation patterns in cancer development and as diagnostic markers.
- To assess the feasibility of integrating epigenetic biomarker testing into cancer screening protocols.
Main Methods:
- Review of existing research on gene hypermethylation in cancer.
- Analysis of the diagnostic and predictive value of epigenetic biomarkers.
- Discussion of non-invasive DNA sources for molecular diagnostics.
Main Results:
- Numerous genes undergo hypermethylation during cancer progression, serving as potential biomarkers.
- Epigenetic biomarkers demonstrate high sensitivity, specificity, and predictive value in detecting occult neoplasms.
- These biomarkers can effectively forecast clinical course and patient outcomes.
Conclusions:
- Epigenetic biomarkers, particularly DNA methylation markers, are valuable for developing practical cancer molecular diagnostics.
- Testing for epigenetic biomarkers is nearing integration into routine cancer screening for general and at-risk populations.
- Advancements in epigenetic diagnostics promise improved cancer management and patient outcomes.
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Epigenetic Regulation
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Epigenetic Regulation
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
