TP53 Gene Polymorphisms and Breast Cancer Risk
Author Information
Author(s): Sandra Costa, Daniela Pinto, Deolinda Pereira, Helena Rodrigues, Jorge Cameselle-Teijeiro, Rui Medeiros, Fernando Schmitt
Primary Institution: Life and Health Sciences Research Institute, School of Health Science, University of Minho, Braga, Portugal
Hypothesis
The two common polymorphisms of the TP53 gene play a role in increasing breast cancer susceptibility.
Conclusion
The study suggests that the TP53 PIN3 Ins16bp polymorphism is a significant risk factor for breast cancer, affecting both sporadic and familial cases.
Supporting Evidence
- Women with A2A2 genotype have a significantly increased risk for developing breast cancer.
- Statistically significant differences were found in haplotype frequencies between familial breast cancer cases and controls.
- Both TP53 polymorphisms are associated with a higher incidence of lymph node metastases.
Takeaway
This study looked at two gene changes that might make people more likely to get breast cancer, and found one of them really does increase the risk.
Methodology
DNA samples from 264 breast cancer patients and 440 controls were analyzed for TP53 polymorphisms using PCR-RFLP.
Potential Biases
Potential selection bias in control group selection.
Limitations
The study may have limited generalizability due to its specific population and sample size.
Participant Demographics
264 breast cancer patients (73 familial, 191 sporadic) and 440 healthy controls, with a median age of 42.29 years.
Statistical Information
P-Value
0.004; 0.026
Confidence Interval
95% CI 1.60–12.0; 95% CI 1.18–12.8
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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