p53 Protein and Genetic Changes in Ovarian Cancer
Author Information
Author(s): D.M. Eccles, L. Brett, A. Lessells, L. Gruber, D. Lane, C.M. Steel, R.C.F. Leonard
Primary Institution: Imperial Cancer Research Fund, Medical Oncology Unit
Hypothesis
The study investigates the correlation between p53 protein expression and allele loss at chromosome 17p in ovarian carcinoma.
Conclusion
The study found that aberrant expression of the p53 protein is common in ovarian cancer and correlates strongly with loss of heterozygosity close to the p53 gene.
Supporting Evidence
- 69% of serous adenocarcinomas showed positive staining for p53.
- 11 out of 12 positively staining tumors showed loss of heterozygosity on chromosome 17p.
- All but one of the serous tumors presented at an advanced clinical stage.
Takeaway
This study shows that a protein called p53, which helps prevent cancer, is often not working properly in ovarian cancer, and this is linked to genetic changes.
Methodology
The study used immunohistochemistry to detect p53 protein and analyzed DNA from tumors and blood for loss of heterozygosity.
Limitations
Clinical follow-up is too short to draw firm conclusions about the prognostic significance of the findings.
Participant Demographics
The study included 27 ovarian tumors, primarily serous adenocarcinomas.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Want to read the original?
Access the complete publication on the publisher's website