Circulating DNA as a Diagnostic Tool for Colorectal Cancer
Author Information
Author(s): Mead R, Duku M, Bhandari P, Cree I A
Primary Institution: Queen Alexandra Hospital, Portsmouth
Hypothesis
Can circulating free DNA (cfDNA) markers improve the diagnosis of colorectal cancer and benign polyps?
Conclusion
Circulating markers in combination with other markers could lead to a simple blood test for colorectal cancer and polyps.
Supporting Evidence
- The best model showed an ROC curve of 0.855 for diagnosing polyps and cancer.
- Patients with benign polyps had significantly raised levels of total DNA compared to normal controls.
- Total DNA was the best single marker for distinguishing cancer from normal in this study.
Takeaway
Doctors can use a blood test to check for cancer and polyps in the colon, which is easier than other tests.
Methodology
The study analyzed cfDNA from blood samples of 85 patients using PCR and CEA measurements.
Limitations
The test lacks specificity for colorectal cancer and requires validation in larger populations.
Participant Demographics
Patients included 35 without endoscopic abnormality, 26 with benign adenomas, and 24 with colorectal carcinomas.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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