“…6,13,15,16,18,20 The characteristics of the literatures are summarized in Table 1. For IL-18 polymorphisms, all the 8 studies (1851 cases and 1792 controls) for -607 A/C, 6,10,13,[15][16][17][18]20 8 studies (2646 cases and 7278 controls) for -137 G/C 6,[11][12][13]15,16,18,20 and 4 studies (1586 cases and 1004 controls) for -105 A/C 14,15,20,21 were conducted in the meta-analysis. Four studies were conducted in Asian, 13,15,18,20 tow in Caucasian, 6,16 and tow in African 10,17 for -607A/C; Five studies were conducted in Asian, 12,13,15,18,20 three in Caucasian 6,11,16 for 137 G/C; Four studies were conducted in Asian 14,15,20,21 for 105 A/C.…”