ADH1B Genotype, Alcohol Consumption, and Breast Cancer Risk
Author Information
Author(s): Lilla C, Koehler T, Kropp S, Wang-Gohrke S, Chang-Claude J
Primary Institution: Deutsches Krebsforschungszentrum
Hypothesis
Does the ADH1B genotype modify the risk of breast cancer associated with alcohol consumption in women up to age 50?
Conclusion
The ADH1B genotype does not independently affect breast cancer risk, but it may modify the risk associated with high alcohol consumption.
Supporting Evidence
- Alcohol consumption is a modifiable risk factor for breast cancer.
- The study found no main effect of ADH1B genotype on breast cancer risk.
- Carriers of the ADH1B*2 allele showed a decreasing trend in breast cancer risk with increasing alcohol consumption.
- Breast cancer risk increased with alcohol consumption among women with the ADH1B*1/*1 genotype.
Takeaway
This study looked at how a specific gene related to alcohol processing might change the risk of breast cancer for women who drink alcohol. It found that while the gene itself doesn't increase risk, it might change how drinking affects that risk.
Methodology
A population-based case-control study was conducted with 613 breast cancer cases and 1082 controls, assessing alcohol consumption and genotyping ADH1B.
Potential Biases
Potential residual confounding by differences in alcohol consumption caused by the genotype.
Limitations
The study had limited power to detect gene-environment interactions due to the low frequency of the ADH1B*2 allele.
Participant Demographics
Women up to age 50 years, with at least one parent of German nationality.
Statistical Information
P-Value
0.04
Confidence Interval
95% CI 0.7–1.4
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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