Genetic Polymorphisms of the Glycine N-Methyltransferase and Prostate Cancer Risk in the Health Professionals Follow-Up Study

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Genetic Polymorphisms of the Glycine N-Methyltransferase and Prostate Cancer Risk in the Health Professionals Follow-Up Study

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Title: Genetic Polymorphisms of the Glycine N-Methyltransferase and Prostate Cancer Risk in the Health Professionals Follow-Up Study
Author: Chen, Marcelo; Huang, Yi-Ling; Huang, Yu-Chuen; Shui, Irene M.; Giovannucci, Edward; Chen, Yen-Ching; Chen, Yi-Ming Arthur

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Citation: Chen, Marcelo, Yi-Ling Huang, Yu-Chuen Huang, Irene M. Shui, Edward Giovannucci, Yen-Ching Chen, and Yi-Ming Arthur Chen. 2014. “Genetic Polymorphisms of the Glycine N-Methyltransferase and Prostate Cancer Risk in the Health Professionals Follow-Up Study.” PLoS ONE 9 (5): e94683. doi:10.1371/journal.pone.0094683. http://dx.doi.org/10.1371/journal.pone.0094683.
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Abstract: Purpose Glycine N-methyltransferase (GNMT) affects genetic stability by regulating the ratio of S-adenosylmethionine to S-adenosylhomocysteine, by binding to folate, and by interacting with environmental carcinogens. In Taiwanese men, GNMT was found to be a tumor susceptibility gene for prostate cancer. However, the association of GNMT with prostate cancer risk in other ethnicities has not been studied. It was recently reported that sarcosine, which is regulated by GNMT, increased markedly in metastatic prostate cancer. We hereby explored the association of GNMT polymorphisms with prostate cancer risk in individuals of European descent from the Health Professionals Follow-up Study (HPFS). Methods: A total of 661 incident prostate cancer cases and 656 controls were identified from HPFS. The GNMT short tandem repeat polymorphism 1 (STRP1), 4-bp insertion/deletion polymorphisms (INS/DEL) and the single nucleotide polymorphism rs10948059 were genotyped to test for their association with prostate cancer risk. Results: The rs10948059 T/T genotype was associated with a 1.62-fold increase in prostate cancer risk (95% confidence interval (CI): 1.18, 2.22) when compared with the C/C genotype. The STRP1 ≥16GAs/≥16GAs genotype was associated with decreased risk of prostate cancer when compared with the <16GAs/<16GAs genotype (odds ratio (OR) = 0.68; 95% CI: 0.46, 1.01). INS/DEL was not associated with prostate cancer risk. Haplotypes containing the rs10948059 T allele were significantly associated with increased prostate cancer risk. Conclusion: In men of European descent, the GNMT rs10948059 and STRP1 were associated with prostate cancer risk. Compared to the study conducted in Taiwanese men, the susceptibility GNMT alleles for prostate cancer had a reverse relationship. This study highlights the differences in allelic frequencies and prostate cancer susceptibility in different ethnicities.
Published Version: doi:10.1371/journal.pone.0094683
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4011739/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:12406871
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