Table I.
Characteristics of the included studies for meta-analysis.
| A, −403G/A polymorphism | |||||||||||
|
| |||||||||||
| First author (Refs.) | Year | Area | Ethnicity | Cases/controls | Case genotypes
|
Control genotypes
|
HWE test | ||||
| GG | GA | AA | GG | GA | AA | ||||||
|
| |||||||||||
| Szalai (11) | 2001 | Hungary | Caucasian | 160/303 | 122 | 32 | 6 | 211 | 84 | 8 | 0.92 |
| Yao (12) | 2003 | China | Asian | 182/107 | 98 | 65 | 19 | 60 | 41 | 6 | 0.77 |
| Liu (13) | 2005 | China | Asian | 32/32 | 17 | 13 | 2 | 16 | 14 | 2 | 0.64 |
| Leung (14) | 2005 | China | Asian | 129/66 | 60 | 53 | 16 | 37 | 21 | 8 | 0.09 |
| Tölgyesi (15) | 2006 | Hungary | Caucasian | 144/174 | 107 | 34 | 3 | 131 | 40 | 3 | 0.98 |
| Sohn (16) | 2008 | Korea | Asian | 326/253 | 109 | 146 | 71 | 97 | 107 | 49 | 0.05 |
|
| |||||||||||
| B, −28C/G polymorphism | |||||||||||
|
| |||||||||||
| First author (Refs.) | Year | Area | Ethnicity | Cases/controls | Case genotypes
|
Control genotypes
|
HWE test | ||||
| CC | CG | GG | CC | CG | GG | ||||||
|
| |||||||||||
| Szalai (11) | 2001 | Hungary | Caucasian | 160/303 | 144 | 16 | 0 | 284 | 19 | 0 | 0.57 |
| Yao (12) | 2003 | China | Asian | 182/107 | 134 | 39 | 9 | 83 | 23 | 1 | 0.67 |
| Wang (17) | 2004 | China | Asian | 100/90 | 65 | 31 | 4 | 72 | 17 | 1 | 1.00 |
| Liu (13) | 2005 | China | Asian | 32/32 | 25 | 6 | 1 | 29 | 3 | 0 | 0.78 |
| Sohn (16) | 2008 | Korea | Asian | 326/253 | 218 | 93 | 15 | 174 | 66 | 13 | 0.05 |
HWE, Hardy-Weinberg equilibrium.