Prognostic Significance of 5T4 Oncofetal Antigen in Colorectal Cancer
Author Information
Author(s): T. Starzynska, P.J. Marsh, P.F. Schofield, S.A. Roberts, K.A. Myers, P.L. Stern
Primary Institution: Paterson Institute of Cancer Research, Christie Hospital NHS Trust
Hypothesis
The expression of the 5T4 oncofetal antigen in colorectal carcinoma is associated with prognosis and survival outcomes.
Conclusion
The presence of the 5T4 antigen in colorectal cancer patients is linked to poorer long-term survival.
Supporting Evidence
- 40% of tumors were 5T4 positive.
- 5-year survival for 5T4-positive tumors was 22% compared to 75% for 5T4-negative tumors.
- Significant correlation between 5T4 expression and unfavorable disease course (p<0.001).
- 5T4 antigen positivity acted independently of stage, site, age, or sex.
Takeaway
If a cancer has a special marker called 5T4, it means the patient might not live as long as someone whose cancer doesn't have that marker.
Methodology
Immunohistochemical analysis of 5T4 antigen expression in tumor samples from colorectal cancer patients.
Potential Biases
Potential misassignment of 5T4-negative tumors due to unrepresentative sampling.
Limitations
The study had a small sample size and excluded patients with incomplete tumor resection.
Participant Demographics
Median age was 65 years, with 62% male participants.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
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