Chromosome 11 Deletion in Breast Cancer
Author Information
Author(s): J. Mackay, P.A. Elder, D.J. Porteous, C.M. Steel, R.A. Hawkins, J.J. Going, U. Chetty
Primary Institution: MRC Clinical and Population Cytogenetics Unit, Western General Hospital
Hypothesis
Is there a correlation between the deletion of the Ha-ras allele and breast cancer characteristics such as tumor size and estrogen receptor levels?
Conclusion
Loss of a Ha-ras allele correlates with lower estrogen receptor protein levels and larger tumor size at presentation.
Supporting Evidence
- 14 out of 65 patients showed loss of a Ha-ras allele.
- Loss of a Ha-ras allele correlates with lower estrogen receptor levels.
- Patients with larger tumors were more likely to have lost a Ha-ras allele.
Takeaway
In breast cancer, losing a specific gene can mean the tumor is bigger and has less of a certain protein that helps fight cancer.
Methodology
DNA samples were collected from 100 breast cancer patients and analyzed for Ha-ras allele loss in comparison to control samples.
Potential Biases
Potential bias due to the selection of patients and the methods used for DNA analysis.
Limitations
The study only analyzed a subset of tumors and may not represent all breast cancer cases.
Participant Demographics
100 breast cancer patients with palpable lumps referred to a breast clinic.
Statistical Information
P-Value
<0.02
Statistical Significance
p<0.02
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