Carcinoembryonic antigen and cytokeratin 20 in peritoneal cells of cancer patients: are we aware of what we are detecting by mRNA examination?
2008
Concerns about mRNA examination in cancer detection
Commentary
Author Information
Author(s): Kowalewska M, Chechlinska M, Nowak R
Primary Institution: The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology
Conclusion
The study's reliance on CEA and CK 20 transcripts for detecting cancer cells is questioned due to their expression in non-cancerous cells.
Supporting Evidence
- CEA and CK 20 transcripts can be expressed by healthy cells and patients with chronic inflammatory diseases.
- Positive RT-PCR results may not accurately indicate the presence of cancer cells.
- Inflammatory cells may be mistaken for cancer cells due to the markers used.
Takeaway
The markers used to detect cancer might actually come from healthy cells, making them unreliable for finding cancer.
Potential Biases
The authors may have biased their conclusions by not addressing the limitations of their methods.
Limitations
The study did not consider the nonspecific expression of tumor markers by activated lymphoid cells and other limitations of the detection methods.
Digital Object Identifier (DOI)
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