Increased p53 Protein in Colorectal Tumors Linked to Poor Survival
Author Information
Author(s): Y. Remvikos, O. Tominaga, P. Hammel, P. Laurent-Puig, R.J. Salmon, B. Dutrillaux, G. Thomas
Primary Institution: Institut Curie, Paris, France
Hypothesis
Does increased p53 protein content in colorectal tumors correlate with patient survival outcomes?
Conclusion
Higher levels of p53 protein in colorectal tumors are associated with poorer survival rates.
Supporting Evidence
- 64% of tumors showed significant levels of nuclear p53.
- 67% of cancers were considered positive for p53.
- p53 content correlated with 17p loss and hyperdiploid DNA content.
- Patients with p53-negative tumors had better overall survival than those with p53-positive tumors.
- More than 80% of patients with p53-negative tumors were alive at 3 years.
Takeaway
This study found that many colorectal cancer patients have high levels of a protein called p53, and those with more of it tend to live shorter lives.
Methodology
The study analyzed 78 colorectal cancer specimens for p53 protein levels using flow cytometry and ELISA.
Limitations
The study did not perform multivariate analysis due to the small number of cases.
Participant Demographics
The study included 78 patients with colorectal adenocarcinoma, with a median follow-up of 42 months.
Statistical Information
P-Value
p<0.002
Statistical Significance
p<0.03
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