Table 4. Comparison of the minor allele frequencies of the connective tissue growth factor (CTGF) SNPs in control groups of different studies. n: size of control population. G: guanine, C: cytosine, T: thymine
Reference Population CTGF allele frequency in the control population
rs6918698 C rs9399005 T rs12526196 C rs9402373 G
This study Turkish 0.449 0.287 0.227 0.182
n 214 214 214 214
Suh et al., 2015 Korean - 0.474 - -
n - 96 - -
Ahmad et al., 2015 Swedish 0.585 0.276 0.080 -
n 112 67 112 -
Miyoshi et al., 2014 Japanese 0.490 - - -
n 144 - - -
Burke et al., 2013 Irish 0.507 – 0.545 0.297 – 0.317 0.087 – 0.059 0.183 – 0.208
n 68-111 69-112 69 – 111 71-113
Louthrenoo et al., 2011 Thai 0.348 - - -
n 99 - - -
Granel et al., 2010 French 0.478 0.275 0.086 -
n 269 269 267 -
Rueda et al., 2009 Spanish 0.497 - - -
n 369 - - -
Kawaguchi et al., 2008 Japanese 0.552 - - -
n 269 - - -
Fonseca et al., 2007 British 0.542 - - -
n 500 - - -