Fetal Microchimerism and Breast Cancer
Author Information
Author(s): Gadi Vijayakrishna K., Malone Kathleen E., Guthrie Katherine A., Porter Peggy L., Nelson J. Lee
Primary Institution: Fred Hutchinson Cancer Research Center
Hypothesis
Is the presence of fetal microchimerism a protective factor against breast cancer?
Conclusion
Women with breast cancer were found to have lower prevalence and quantity of fetal microchimerism compared to controls.
Supporting Evidence
- Fetal microchimerism was found in 56% of controls and 26% of breast cancer cases.
- Women with fetal microchimerism had an odds ratio of 0.29 for breast cancer.
- Median concentrations of fetal microchimerism were significantly higher in controls.
Takeaway
Having tiny bits of DNA from a baby in a mother's body might help protect her from getting breast cancer.
Methodology
DNA from blood samples of 99 women was tested for male DNA to assess fetal microchimerism.
Potential Biases
Potential bias due to self-reported reproductive histories.
Limitations
The study had a small sample size and focused only on parous women.
Participant Demographics
Women aged 21 to 45, including 54 with breast cancer and 45 controls.
Statistical Information
P-Value
0.02
Confidence Interval
0.11–0.83
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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