title: Functional polymorphisms and haplotypes in the promoter of the MMP2 gene are associated with risk of nasopharyngeal carcinoma.
abstract: Matrix metalloproteinases (MMPs) play important roles in cancer initiation and development. Several polymorphisms in the promoters of a number of MMP genes, which can affect the respective MMP production in an allele-specific manner, have been well characterized. We examined whether these functional polymorphisms were related to the risk of nasopharyngeal carcinoma (NPC) in Chinese populations. Eight polymorphisms in the promoter of MMP1, MMP2, MMP3, MMP7, MMP9, MMP12, and MMP13 were genotyped in two independent case-control populations; one is from Guangxi province (593 patients with NPC and 480 controls), and the other is from Guangdong province (239 patients and 286 controls). We observed significantly increased susceptibility to NPC for the MMP2 -1306CC (rs243865:C>T) (odds ratio [OR] = 2.01, 95% confidence interval [CI] = 1.30-3.10) and -735CC (rs2285053:C>T) (OR = 1.56, 95% CI = 1.17-2.09) genotype carriers compared with noncarriers in the Guangxi population. This association was confirmed in the Guangdong population (for -1306CC: OR = 2.19, 95% CI = 1.21-3.96; for -735CC: OR = 1.60, 95% CI = 1.13-2.28). The C(-1306)-C(-735) haplotype was also significantly associated with increased susceptibility to NPC in both the Guangxi (OR = 1.64, 95% CI = 1.35-1.99) and Guangdong population (OR = 1.68, 95% CI = 1.29-2.19). Furthermore, stratified analysis indicated that the increased susceptibility to NPC related to the -1306CC and -735CC genotype and the C(-1306)-C(-735) haplotype was more pronounced in heavier smokers. Our findings suggest that the genetic polymorphisms or haplotype in the MMP2 promoter may play a role in mediating the susceptibility to NPC in Chinese populations.
authors.affiliation: The State Key Laboratory of Proteomics, Beijing Proteome Research Center, Beijing Institute of Radiation Medicine, Beijing, China. zhougq@chgb.org.cn
authors.forename: Gangqiao
authors.initials: G
authors.lastname: Zhou
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhai
authors.forename: Ying
authors.initials: Y
authors.lastname: Cui
authors.forename: Wei
authors.initials: W
authors.lastname: Qiu
authors.forename: Hao
authors.initials: H
authors.lastname: Yang
authors.forename: Xiumei
authors.initials: X
authors.lastname: Zhang
authors.forename: Xiaojia
authors.initials: X
authors.lastname: Dong
authors.forename: Ying
authors.initials: Y
authors.lastname: He
authors.forename: Kaitai
authors.initials: K
authors.lastname: Yao
authors.forename: Hongxing
authors.initials: H
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Peng
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Yuan
authors.forename: Lianteng
authors.initials: L
authors.lastname: Zhi
authors.forename: Xiaoai
authors.initials: X
authors.lastname: Zhang
authors.forename: Fuchu
authors.initials: F
authors.lastname: He
mesh_terms: D001483:Base Sequence; D016022:Case-Control Studies; D002681:China; D017931:DNA Primers; D005260:Female; D020022:Genetic Predisposition to Disease; D006239:Haplotypes; D006801:Humans; D008297:Male; D020778:Matrix Metalloproteinase 2 / Q000235:genetics*; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000208:ethnology / Q000235:genetics*; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D011401:Promoter Regions, Genetic
chemical_list: D017931:DNA Primers; C522361:MMP2 protein, human; D020778:Matrix Metalloproteinase 2