Ha-ras Gene Mutation in Bladder Cancer
Author Information
Author(s): B. Czerniak, D. Deitch, H. Simmons, P. Etkind, F. Herz, L.G. Koss
Primary Institution: Montefiore Medical Center, Albert Einstein College of Medicine
Hypothesis
The study investigates the presence of Ha-ras gene codon 12 mutations in urinary bladder carcinomas and their correlation with DNA ploidy.
Conclusion
The study found that urinary bladder tumors with aneuploid DNA patterns often have mutations at codon 12 of the Ha-ras gene, indicating a potential for aggressive clinical behavior.
Supporting Evidence
- 12 out of 33 bladder tumors showed a mutation at codon 12 of the Ha-ras gene.
- 10 of the 20 aneuploid tumors had the valine mutation at codon 12.
- The mutation frequency was higher than previously reported using other methods.
- DNA ploidy patterns correlated better with mutation presence than histological grading.
Takeaway
Researchers looked at bladder cancer samples to see if a specific gene was changed, and they found that many aggressive tumors had this change.
Methodology
DNA was extracted from fresh tumor samples and amplified using PCR to detect mutations at codon 12 of the Ha-ras gene.
Limitations
The study does not address the clinical outcomes of the tumors or the implications of the mutations in treatment.
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