RT Journal Article SR Electronic T1 A Genetic Variant Located in miR-423 is Associated with Reduced Breast Cancer Risk JF Cancer Genomics - Proteomics JO Cancer Genomics Proteomics FD International Institute of Anticancer Research SP 115 OP 118 VO 9 IS 3 A1 SMITH, ROBERT A. A1 JEDLINSKI, DOMINIK J. A1 GABROVSKA, PLAMENA N. A1 WEINSTEIN, STEPHEN R. A1 HAUPT, LARISA A1 GRIFFITHS, LYN R. YR 2012 UL http://cgp.iiarjournals.org/content/9/3/115.abstract AB Background/Aim: Since microRNAs (miRNAs) act as translational regulators of multiple genes, single nucleotide polymorphisms (SNP) in them can have potentially wide-ranging effects. Using an association approach, this research examined the effects of the rs6505162 SNP, an A>C polymorphism located in the pre-miRNA region of miR-423, on breast cancer development. Materials and Methods: Caucasian Australian women with breast cancer and controls matched for age and ethnicity were genotyped for rs6505162 and their genotypic and allelic frequencies analysed for significant differences. Results: Analysis indicated that there were significant differences between the case and control populations (χ2=6.70, p=0.035), with the CC genotype conferring reduced risk of breast cancer development (odds ratio=0.50 95% confidence interval=0.27-0.92, p=0.03). Conclusion: Further functional research is required to determine the mechanism of action of this SNP on miRNA function.