Polymorphism of klotho G-395A and susceptibility of coronary artery disease in East-Asia population: a meta-analysis.
OBJECTIVE
To investigate the association between polymorphism of Klotho G-395A and susceptibility of coronary artery disease (CAD) in East-Asia population.


METHODS
A total of 6 case-control studies involving 1560 patients and 1459 controls were analyzed in the study. PubMed, Embase, CBM disc, Wanfang database were searched for published case-control studies investigating the association between Klotho G-395A and CAD that were available before Dec. 2013. Fixed or random effect models were selected for odds ratio (OR) calculation. A Meta-analysis was performed to estimate heterogeneity and the pooled odds ratio (OR) to evaluate the relationship between Klotho G-395A polymorphism and CAD. The sensitivity analysis was also assessed.


RESULTS
There was no significant heterogeneity found (dominant genetic model: P = 0.2, I(2) = 30.8%). The pooled OR (95% CI) value of the frequencies of the Klotho G-395A genotype (GA + AA)/GG calculated by fixed effects mode was 1.24 (95% CI:1.06-1.45), P = 0.009. There was no significant heterogeneity among the remaining articles after using random effect model or excluding the article with the largest weight or the article with larger frequencies of the allele A, respectively. And the pooled OR (95% CI) value of the frequencies of the genotype (GA + AA)/GG were similar. Publication bias was not found by Begg's test.


CONCLUSIONS
Klotho G-395A polymorphism may be a susceptible factor of CAD in East-Asia population.
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Changlin
C
Zhai
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Guanmin
G
Tang
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Gang
G
Qian
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Huilin
H
Hu
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Aiming
A
Gu
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Ying
Y
Fang
Department of ECG, Jiaxing Hospital of Traditional Chinese Medicine Jiaxing 314000, Zhejiang, China.
Xiaohong
X
Hu
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Zhiyong
Z
Wang
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Shijun
S
Wang
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Ming
M
Yao
Department of Cardiology, First Affiliated Hospital of Jiaxing University Jiaxing 314000, Zhejiang, China.
Jiayin
J
Li
Coronary artery disease; polymorphism of klotho G-395A