CDH1 rs9929218 variant at 16q22.1 contributes to colorectal cancer susceptibility.
Colorectal cancer (CRC) is the third most common cancer. Large-scale genome-wide association studies (GWAS) have been performed and reported some novel CRC susceptibility variants in European ancestry including the CDH1 rs9929218. Following GWAS and candidate studies evaluated the association between the CDH1 rs9929218 polymorphism and CRC in European, Asian and American populations. However, these studies reported inconsistent associations. Evidence shows that rs9929218 may regulate different gene expressions in different human tissues. Here, we reevaluated this association using large-scale samples from 16 studies (n=131768) using a meta-analysis method. In heterogeneity test, we did not identify significant heterogeneity among these studies. Meta-analysis using fixed effect model showed significant association between rs9929218 and CRC (P=6.16E-21, odds ratio (OR) =0.92, 95% confidence interval (CI) 0.91-0.94). In order to validate the effect of rs9929218 variant on CDH1 expression, we further performed a functional analysis using two large-scale expression datasets. We identified significant regulation relation between rs9929218 variant and the expression of CDH1, ZFP90, RP11-354M1.2 and MCOLN2 by both cis-effect and trans-effect. In summary, our analysis highlights significant association between rs9929218 polymorphism and CRC susceptibility.
Department of Colorectal Surgery, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150040, China.
Peng
P
Han
Genome Analysis Laboratory, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China.
Guiyou
G
Liu
Department of Gastroenterology, The First Hospital of Harbin, Harbin, 150001, China.
Xin
X
Lu
Department of Endocrinology, The First Hospital of Harbin, Harbin, 150001, China.
Minmin
M
Cao
Department of Gastroenterology, The First Hospital of Harbin, Harbin, 150001, China.
Youling
Y
Yan
Department of Hematology, The First Hospital of Harbin, Harbin, 150001, China.
Jing
J
Zou
Department of Pathology, Harbin Medical University, Harbin, 150081, China.
Xiaobo
X
Li
Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150040, China.
Guangyu
G
Wang
D015703:Antigens, CD; D015820:Cadherins / Q000235:genetics*; D002885:Chromosomes, Human, Pair 16; D015179:Colorectal Neoplasms / Q000235:genetics* / Q000473:pathology; D020022:Genetic Predisposition to Disease; D055106:Genome-Wide Association Study / Q000379:methods; D005838:Genotype; D006801:Humans; D020641:Polymorphism, Single Nucleotide
D015703:Antigens, CD; C513384:CDH1 protein, human; D015820:Cadherins
colorectal cancer; eQTL; genome-wide association study; meta-analysis; rs9929218