title: CYP1A1 rs1048943 and rs4646903 polymorphisms associated with laryngeal cancer susceptibility among Asian populations: a meta-analysis.
abstract: Many studies have investigated the association between CYP1A1 rs1048943 and rs4646903 polymorphisms and laryngeal cancer risk, but their results have been inconsistent. The PubMed and CNKI were searched for case-control studies published up to 01 July 2015. Data were extracted and pooled odds ratios (OR) with 95% confidence intervals (CI) were calculated. In this meta-analysis, we assessed 10 published studies involving comprising 748 laryngeal cancer cases and 1558 controls of the association between CYP1A1 rs1048943 and rs4646903 polymorphisms and laryngeal cancer risk. For CYP1A1 rs1048943 of the homozygote G/G and G allele carriers (A/G + G/G) versus A/A, the pooled ORs were 1.77 (95% CI = 1.28-2.81, P = 0.007 for heterogeneity) and 1.86 (95% CI = 1.45-2.40, P = 0.000 for heterogeneity). For CYP1A1 rs4646903 of the homozygote G/G and G allele carriers (A/G + G/G) versus A/A, the pooled ORs were 1.53 (95% CI = 1.31-2.21, P = 0.012 for heterogeneity) and 1.33(95% CI = 1.04-1.71, P = 0.029 for heterogeneity). In the stratified analysis by ethnicity, the significantly risks were found among Asians for both the G allele carriers and homozygote G/G. However, no significant associations were found in Caucasian population all genetic models. These results from the meta-analysis suggest that CYP1A1 rs1048943 and rs4646903 polymorphisms contribute to risk of laryngeal cancer among Asian populations.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zeng
authors.affiliation: Department of Ophthalmology, First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China.
authors.forename: Yanwei
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China.
authors.forename: Eryong
authors.initials: E
authors.lastname: Lu
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China.
authors.forename: Min
authors.initials: M
authors.lastname: Ma
mesh_terms: D000483:Alleles; D044466:Asian People / Q000235:genetics*; D016022:Case-Control Studies; D019363:Cytochrome P-450 CYP1A1 / Q000235:genetics*; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005838:Genotype; D006801:Humans; D007822:Laryngeal Neoplasms / Q000235:genetics*; D011110:Polymorphism, Genetic / Q000235:genetics*; D012307:Risk Factors
chemical_list: C569463:CYP1A1 protein, human; D019363:Cytochrome P-450 CYP1A1
keywords: CYP1A1; laryngeal cancer; meta-analysis; polymorphism; rs1048943; rs4646903; susceptibility