Functional polymorphism in the EpCAM gene is associated with occurrence and advanced disease status of cervical cancer in Chinese population.
The epithelial cell adhesion molecule (EpCAM) was originally identified as a tumor associated antigen, attributable to its high expression on rapidly proliferating tumors of epithelial origin. EpCAM plays vital roles in carcinogenesis, tumor progression and metastasis in most tumors. A non-synonymous polymorphism (rs1126497 C/T) was found in exon 3 of EpCAM, which cause a transition from 115 Met to 115 Thr. Another polymorphism (rs1421 A/G) in the 3'UTR causes loss of has-miR-1183 binding. We performed a multiple independent case-control analysis to assess the association between EpCAM genotypes and cervical cancer risk. Genotyping a total of 518 patients with cervical cancer and 723 control subjects in a Chinese population, we observed that the variant EpCAM genotypes (rs1126497 CT, and TT) were associated with substantially increased risk of cervical cancer. Compared with the rs1126497 CC genotype, CT genotype had a significantly increased risk of cervical cancer (Crude OR = 1.70; 95% CI = 1.33-2.20; adjusted OR = 1.72; 95% CI = 1.33-2.22), the TT carriers had a further increased risk of cervical cancer (Crude OR = 1.94; 95% CI = 1.01-3.72; adjusted OR = 1.96; 95%CI = 1.01-3.81), and there was a trend for an allele dose effect on risk of cervical cancer (P < 0.001). Moreover, the allele T increases the risk for invasive disease or metastatic disease, compared with C allele. However, there exists no significant difference in genotype frequencies of rs1421 A/G site between cases and controls (P = 0.798). These findings suggest that rs1126497 C/T polymorphism in EpCAM may be a genetic modifier for developing cervical cancer.
Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Soochow University, San Xiang Road No 1055, Suzhou 215004, People's Republic of China.
Min
M
Hu
Lan
L
Jian
Liyuan
L
Zhang
Jiang
J
Zheng
Yonghe
Y
You
Jieqiong
J
Deng
Hua
H
Li
Yifeng
Y
Zhou
D000328:Adult; D000951:Antigens, Neoplasm / Q000235:genetics*; D016022:Case-Control Studies; D015815:Cell Adhesion Molecules / Q000235:genetics*; D002681:China / Q000453:epidemiology; D000071858:Epithelial Cell Adhesion Molecule; D005260:Female; D056726:Genetic Association Studies; D005838:Genotype; D006801:Humans; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D012306:Risk; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology* / Q000235:genetics*
D000951:Antigens, Neoplasm; D015815:Cell Adhesion Molecules; C499379:EPCAM protein, human; D000071858:Epithelial Cell Adhesion Molecule