Genetic Variants and Colorectal Cancer Risk
Author Information
Author(s): Camilla Furu Skjelbred, Mona Sæbø, Håkan Wallin, Bjørn Andersen Nexø, Per Christian Hagen, Inger Marie Bowitz Lothe, Steinar Aase, Egil Johnson, Inger-Lise Hansteen, Ulla Vogel, Elin H Kure
Primary Institution: Department of Laboratory Medicine, Telemark Hospital
Hypothesis
Do polymorphisms in the XRCC1, XRCC3, and XPD genes influence the risk of colorectal adenomas and carcinomas?
Conclusion
The study suggests that certain genetic variants in DNA repair genes are associated with an increased or decreased risk of colorectal adenomas and carcinomas.
Supporting Evidence
- The XRCC1 280His allele was linked to a higher risk of adenomas.
- The XRCC1 399Gln allele was associated with a reduced risk of high-risk adenomas.
- Carriers of the XPD 751Gln allele had an increased risk of low-risk adenomas.
Takeaway
Some people have genes that make them more likely to get certain types of growths in their intestines, which can lead to cancer.
Methodology
A case-control study design was used with 157 carcinomas, 983 adenomas, and 399 controls to assess genetic polymorphisms.
Potential Biases
Potential for misclassification of controls and cases due to the nature of the screening process.
Limitations
The study had a relatively small sample size for some groups, which may limit the power to detect associations.
Participant Demographics
Participants were of Norwegian origin, with a mix of genders and ages.
Statistical Information
P-Value
0.62 for XRCC1 Arg399Gln and 2.30 for XRCC1 Arg280His
Confidence Interval
95% CI 1.19–4.46 for XRCC1 280His
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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