Literature citations

Association Between SHMT1 rs1979277 Polymorphism and Risk of Acute Lymphoblastic Leukemia: A Systematic Review and Meta-analysis.

ObjectivesThe aim of this study was to explore the potential association the cytosolic serine hydroxy methyltransferase (SHMT1) rs1979277 polymorphism and the risk of acute lymphoblastic leukemia (ALL).Materials and methodsComprehensive search of Web of Science, PubMed, Ovid, Cochrane Library, Embase, China National Knowledge Infrastructure (CNKI), and China Biomedical Literature Database electronic database, was performed to identify relevant studies published throughout April 30, 2019. The heterogeneity in the study was judged by the I2 and P-values, and then the random ratio or fixed effect was used to calculate the pooled odds ratios (OR) based on the presence or absence of heterogeneity. Sensitivity analysis is used to estimate the impact of individual studies on aggregate estimates. The publication bias of the study was tested using a funnel plot and an Egger regression.ResultsNine studies with a total of 6492 participants (2971 patients; 3521 controls) were included in this meta-analysis. We found that SHMT1 rs1979277 polymorphism was not significantly associated with the risk of ALL in the dominant model: CC versus CT+TT (OR=0.84, 95% confidence interval [CI]: 0.46-1.54, P=0.57), recessive model: CC+CT versus TT (OR=0.81, 95% CI: 0.44-1.49, P=0.50) and allele model: C versus T (OR=0.84, 95% CI: 0.52-1.35, P=0.48). In subgroup analysis by ethnicity, no significant association were found in dominant, recessive and allele models in both Caucasian and Asian populations.ConclusionOur study indicated that the SHMT1 rs1979277 polymorphism was not associated with the risk of susceptibility to ALL.

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