c-erbB-2 Amplification in Bladder Cancer
Author Information
Author(s): L.M. Coombs, D.A. Pigott, E. Sweeney, A.J. Proctor, M.E. Eydmann, C. Parkinson, M.A. Knowles
Primary Institution: Marie Curie Research Institute
Hypothesis
Does amplification and over-expression of c-erbB-2 correlate with tumor grade and recurrence in transitional cell carcinoma of the bladder?
Conclusion
c-erbB-2 amplification and over-expression are common in transitional cell carcinoma of the bladder and may serve as useful prognostic indicators.
Supporting Evidence
- Amplification of c-erbB-2 was found in 14% of transitional cell carcinoma samples.
- Amplification correlated with tumor grade, being more frequent in higher-grade tumors.
- Seven out of 23 patients showed amplification in subsequent tumor samples, indicating disease progression.
Takeaway
This study looked at a gene called c-erbB-2 in bladder cancer and found that when this gene is more active, it can mean the cancer is more serious.
Methodology
The study involved analyzing tissue samples from patients for c-erbB-2 gene amplification using Southern blotting and assessing mRNA levels through Northern blotting.
Potential Biases
Potential bias in sample selection and interpretation of histopathological results.
Limitations
The study had a limited follow-up period and did not assess long-term outcomes for all patients.
Participant Demographics
Patients with transitional cell carcinoma of the bladder, including various tumor grades.
Statistical Information
P-Value
0.005
Statistical Significance
0.005<P<0.01
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