Genetic Polymorphism of DNA Methyltransferase 3A rs1550117 A>G and Risk of Cancer: A Meta-analysis.

Abstract

Numerous studies have investigated the association between DNMT3A rs1550117 A>G polymorphism and cancer risk, but the results are inconsistent. To obtain a more precise evaluation of the relationship, we performed a meta-analysis of 10 case-control studies involving a total of 2184 cancer cases and 3420 controls. Our findings demonstrated a significant association between DNMT3A rs1550117 A>G polymorphism and increased risk of cancer in three genetic models: AA vs. AG + GG (OR, 1.79; 95% CI, 1.12-2.88; p = 0.015), AA vs. GG (OR, 1.81; 95% CI, 1.11-2.95; p = 0.018) and AA vs. AG (OR 1.77; 95% CI 1.13-2.79; p = 0.013). In a stratified analysis by cancer type, significant association between DNMT3A rs1550117 A>G polymorphism and increased risk of colorectal cancer was identified in four genetic models: AA vs. AG + GG (OR, 3.07; 95% CI, 1.56-6.06; p = 0.001), AA vs. GG (OR, 3.16; 95% CI, 1.58-6.29; p = 0.001), AA vs. AG (OR, 2.87; 95% CI, 1.41-5.84; p = 0.004), A vs. G (OR, 1.43; 95% CI, 1.11-1.83; p = 0.005). Furthermore, a stratified analysis by ethnicity, significant increased risk of cancer was found among Asians in three genetic models: AA vs. AG + GG (OR, 1.77; 95% CI, 1.09-2.88; p = 0.022), AA vs. GG (OR, 1.78; 95% CI, 1.08-2.96; p = 0.025), AA vs. AG (OR, 1.75; 95% CI, 1.10-2.79; p = 0.019). No significant publication bias was revealed for the meta-analysis. Sensitivity analysis suggested the reliability of our findings. In conclusion, this meta-analysis suggests that DNMT3A rs1550117 A>G polymorphism may be associated with cancer susceptibility.

• Authors: Wenbo Zhang, Ying Xu, Gui Ma, Weidong Qi, Haiyong Gu, Pengcheng Jiang
• Journal: Journal of investigative surgery : the official journal of the Academy of Surgical Research (J Invest Surg) Vol. 28 Issue 6 Pg. 346-53 ( 2015) ISSN: 1521-0553 [Electronic] United States
• PMID: 26203494 (Publication Type: Journal Article, Meta-Analysis)

Chemical References

• DNMT3A protein, human
• DNA (Cytosine-5-)-Methyltransferases
• DNA Methyltransferase 3A

Topics

• Asian People (genetics)
• Case-Control Studies
• Colorectal Neoplasms (enzymology, genetics)
• DNA (Cytosine-5-)-Methyltransferases (genetics)
• DNA Methyltransferase 3A
• Female
• Genetic Predisposition to Disease
• Humans
• Male
• Models, Genetic
• Neoplasms (enzymology, genetics)
• Polymorphism, Single Nucleotide
• Risk Factors