Abstract
BackgroundWhether glutathione S-transferases (GST) null genotypes influence individual susceptibility to leukemia remains controversial. Thus, we performed this meta-analysis to better analyze potential influences of GST null genotypes on individual susceptibility to leukemia. MethodsLiterature retrieve was conducted in PubMed, Web of Science and Embase. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated. ResultsTotally fifty-one studies were enrolled for analyses. Significant associations with elevated individual susceptibility to leukemia were detected for GSTM1 (p < .0001, OR = 1.28, 95%CI 1.16–1.41), GSTP1 (p = .003, OR = 1.22, 95%CI 1.07–1.40) and GSTT1 (p < .0001, OR = 1.53, 95%CI 1.35–1.74) null genotypes in overall analyses. Further subgroup analyses by type of disease revealed that GSTM1, GSTP1 and GSTT1 null genotypes were all significantly associated with elevated individual susceptibility to acute lymphoblastic leukemia, GSTM1 and GSTT1 null genotypes were significantly associated with elevated individual susceptibility to acute myeloid leukemia, and GSTT1 null genotype was also significantly associated with elevated individual susceptibility to chronic leukemia. When we stratified data according to ethnicity of participants, positive results were found for all investigated variants in Caucasians and West Asians. Additionally, GSTM1 null genotype was also significantly correlated with elevated individual susceptibility to leukemia in East Asians. ConclusionsOur findings indicated that GSTM1, GSTT1 and GSTP1 null genotypes might serve as potential genetic biomarkers of leukemia in certain ethnicities.
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