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Updated: Jun 13, 2026

Detection and Monitoring of Tumor Associated Circulating DNA in Patient Biofluids

Detection and Monitoring of Tumor Associated Circulating DNA in Patient Biofluids

Published on: June 8, 2019

Circulating Tumor DNA: A Breakthrough in Oncological Analyses.

Zihui Gao¹, Ali Sinehsepehr², Seyed Hadi Hashemi³

¹College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China.

Journal of Biochemical and Molecular Toxicology

|June 12, 2026

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This summary is machine-generated.

Circulating tumor DNA (ctDNA) analysis offers a non-invasive method for detecting cancer biomarkers. This promising oncology tool aids in early diagnosis, prognosis, and treatment monitoring by analyzing tumor-derived DNA fragments.

Area of Science:

Oncology
Molecular Biology
Genetics

Background:

Circulating tumor DNA (ctDNA) comprises cell-free DNA fragments from malignant cells, containing crucial genomic and epigenetic alterations.
These alterations include point mutations, copy number variations, and promoter hypermethylation, offering insights into tumor biology.

Purpose of the Study:

To review advancements in ctDNA analysis.
To discuss clinical applications of ctDNA across various cancer types.
To highlight challenges in ctDNA-based diagnostics.

Main Methods:

Analysis of ctDNA for genomic and epigenetic alterations.
Correlation of ctDNA concentration and profile with tumor characteristics.
Review of current literature on ctDNA advancements and applications.

Keywords:

Point mutation cancer ctDNA laboratory biomarker methylation

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Last Updated: Jun 13, 2026

Detection and Monitoring of Tumor Associated Circulating DNA in Patient Biofluids

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Main Results:

ctDNA analysis enables non-invasive detection of molecular changes.
Abnormal ctDNA methylation patterns can indicate early tumorigenesis and serve as predictive markers.
ctDNA profiles correlate with tumor type, stage, and location.

Conclusions:

ctDNA is a valuable biomarker for early cancer diagnosis, prognosis, and treatment monitoring.
Further research is needed to address technical and biological challenges in ctDNA diagnostics.