Genetic Variants Affecting the Let-7/LIN28 Feedback Loop and Breast Cancer Risk
Author Information
Author(s): Chen Ao-Xiang, Yu Ke-Da, Fan Lei, Li Ji-Yu, Yang Chen, Huang A-Ji, Shao Zhi-Ming
Primary Institution: Fudan University, Shanghai, China
Hypothesis
Do germline genetic variants disturb the regulation of the let-7/LIN28 feedback loop and alter breast cancer risk?
Conclusion
The study found that the C allele of the rs3811463 SNP is associated with increased LIN28 protein levels and decreased let-7 levels, leading to a higher risk of breast cancer.
Supporting Evidence
- The C allele of rs3811463 was associated with a 1.25 odds ratio for breast cancer risk.
- Individuals with the TC genotype had significantly lower levels of let-7 and higher levels of LIN28 protein.
- Two independent studies confirmed the association of rs3811463 with breast cancer risk.
Takeaway
Some people have a genetic change that makes them more likely to get breast cancer because it affects how their body controls certain proteins.
Methodology
The study involved genetic association studies and tissue analysis to evaluate the impact of specific SNPs on breast cancer risk.
Potential Biases
Potential biases may arise from the selection of participants and the focus on specific genetic variants.
Limitations
The study did not include individuals with the rare rs3811463-CC genotype, which may limit the findings.
Participant Demographics
The study focused on Han Chinese women.
Statistical Information
P-Value
0.0091
Confidence Interval
1.06–1.47
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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