Background: Genetic factors play a substantial role in acute myeloid leukemia (AML) etiology. Overexpression of the mouse double minute 2 (MDM2) gene has been explored in many tumors. However, the role of MDM2-309T>G (rs2279744) polymorphism in AML remains unclear. We have performed this study to examine the association of MDM2-309T>G with AML in an Iranian population. Methods: We have examined the association of N MDM2-309T>G polymorphism in 73 cases diagnosed with AML and 80 healthy controls by tetra-primer amplification refractory mutation system (ARMS) PCR assay. Odds ratios (OR) and 95% confidence intervals (CI) were calculated on the risk genotypes and alleles. Results: The TT, GG and GG genotypes of MDM2-309T>G polymorphism in patients were 32.9%, 23.2% and 43.9%, while in controls were 86.2%, 7.5% and 6.3%, respectively. Moreover, Frequency of mutant allele (G) was 55.6% in cases with AML and 10.0% in controls. The mutant homozygote genotype (GG) was associated with an increased susceptibility to AML (OR 1.471; 95% CI: 1.062-1.844; p=0.004). Conclusion: Our results showed that the MDM2-309T>G polymorphism was significantly associated with increased risk of AML in the Iranian population. Thus, the MDM2-309T>G polymorphism might be useful genetic susceptibility factors in the pathogenesis of AML.
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