The effect of XPD/ERCC2 Lys751Gln polymorphism on acute leukemia risk: a systematic review and meta-analysis.
OBJECTIVE
Epidemiological studies have assessed the association between xeroderma pigmentosum group D (XPD) Lys751Gln and acute leukemia risk with conflicting results. We performed this meta-analysis to derive a more precise estimation of the relationship. Pooled odds ratio (OR) with 95% confidence interval (95% CI) was used to assess the strength of the association.


RESULTS
Ten published case-control studies including a total of 1494 cases and 2259 controls were identified. Overall, significant risk effects of Lys751Gln genotype was found under the dominant model (OR=1.16; 95% CI=1.01-1.34; P=0.032). When stratified by clinical types, the variant genotype was associated with the acute myeloid leukemia (AML) risk under the heterozygote comparison (OR=1.20; 95% CI=1.00-1.43; P=0.048), the homozygote comparison (OR=1.35; 95% CI=1.05-1.74; P=0.019) and the dominant model (OR=1.23; 95% CI=1.04-1.45; P=0.015), respectively. Furthermore, significantly increased risks were also pronounced in Caucasian AML patients (the homozygote comparison: OR=1.38; 95% CI=1.07-1.78; P=0.013; the dominant model: OR=1.23; 95% CI=1.03-1.46; P=0.020; and the recessive model: OR=1.26; 95% CI=1.00-1.60; P=0.050). No evident heterogeneities were observed for the overall data under all genetic models. In addition, no statistical evidence for publication bias was found using the method of Begg's and Egger's tests.


CONCLUSIONS
This meta-analysis suggested that XPD Lys751Gln polymorphism might be a risk factor for AML and Caucasian acute leukemia patients.
Department of pharmacy, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China.
Duo
D
Liu
Department of pharmacy, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China.
Dongyuan
D
Wu
Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China.
Hongbin
H
Li
Department of pharmacy, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China. Electronic address: mdhappy2006@hotmail.com.
Mei
M
Dong
D019943:Amino Acid Substitution; D005799:Genes, Dominant; D005808:Genes, Recessive; D056726:Genetic Association Studies; D006801:Humans; D007938:Leukemia / Q000235:genetics*; D015470:Leukemia, Myeloid, Acute / Q000235:genetics; D008957:Models, Genetic; D011110:Polymorphism, Genetic; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000235:genetics; D012307:Risk Factors; D051759:Xeroderma Pigmentosum Group D Protein / Q000235:genetics*
D051759:Xeroderma Pigmentosum Group D Protein; C497292:ERCC2 protein, human
Acute leukemia susceptibility; Meta-analysis; Polymorphism; XPD