Polymorphisms in thymidylate synthase gene and susceptibility to breast cancer in a Chinese population: a case-control analysis
2006

Thymidylate Synthase Gene Variants and Breast Cancer Risk in Chinese Women

Sample size: 905 publication 10 minutes Evidence: moderate

Author Information

Author(s): Zhai Xiangjun, Gao Jun, Hu Zhibin, Tang Jinhai, Qin Jianwei, Wang Shui, Wang Xuechen, Jin Guangfu, Liu Jiyong, Chen Wenshen, Chen Feng, Wang Xinru, Wei Qingyi, Shen Hongbing

Primary Institution: Nanjing Medical University

Hypothesis

Polymorphisms of the TYMS gene are associated with risk of breast cancer.

Conclusion

The TS3'-UTR del6 polymorphism may play a role in the etiology of breast cancer.

Supporting Evidence

  • The TS3'-UTR del6 genotype was associated with a significantly reduced risk of breast cancer.
  • Breast cancer risks associated with the TS3'-UTR del6 genotype were more evident in older women.
  • The study included 432 breast cancer cases and 473 cancer-free controls.

Takeaway

This study looked at how certain gene changes might affect the risk of getting breast cancer in women. They found that one specific gene change might help lower that risk.

Methodology

A case-control study genotyping two polymorphisms in 432 breast cancer cases and 473 controls.

Potential Biases

Potential biases due to the hospital-based nature of the case-control study.

Limitations

Lack of detailed dietary intake data and potential selection bias due to different sources for cases and controls.

Participant Demographics

All subjects were genetically-unrelated ethnic Han Chinese from Nanjing city and surrounding regions.

Statistical Information

P-Value

0.026

Confidence Interval

95% CI = 0.35–0.97

Statistical Significance

p=0.026

Digital Object Identifier (DOI)

10.1186/1471-2407-6-138

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