| First Author | Year | Country | Ethnicity | Cancer Type | Genotyping Method | Source of Control | Sample Size (Case/Control) | HWE (P value) | Quality score | ||
| Christensen [12] | 2010 | USA | Caucasian | OSCC | Taqman | PB | 269/555 | 0.36 | 8 | ||
| Christensen [12] | 2010 | USA | Caucasian | PSCC | Taqman | PB | 123/555 | 0.36 | 8 | ||
| Li [13] | 2010 | China | Asian | HCC | PCR-RFLP | HB | 310/222 | 0.40 | 7 | ||
| Liu [14] | 2010 | USA | Caucasian | OSCC | PCR-RFLP | HB | 326/1130 | 0.74 | 8 | ||
| Liu [14] | 2010 | USA | Caucasian | PSCC | PCR-RFLP | HB | 566/1130 | 0.74 | 8 | ||
| Okubo [15] | 2010 | Japan | Asian | Gastric cancer | PCR-RFLP | HB | 552/697 | 0.51 | 9 | ||
| Peng [16] | 2010 | China | Asian | Gastric cancer | PCR-RFLP | HB | 213/213 | 0.94 | 7 | ||
| Qi [17] | 2010 | China | Asian | HCC | PCR-LDR | HB | 361/590 | 0.40 | 7 | ||
| Srinastava [18] | 2010 | India | Asian | Gallbladder cancer | PCR-RFLP | PB | 230/230 | 0.07 | 7 | ||
| Wang [19] | 2010 | China | Asian | ESCC | SNaPshot | PB | 458/489 | 0.60 | 9 | ||
| Akkız [20] | 2011 | Turkey | Caucasian | HCC | PCR-RFLP | HB | 185/185 | 0.49 | 7 | ||
| Zhan [21] | 2011 | China | Asian | CRC | PCR-RFLP | HB | 252/543 | 0.85 | 7 | ||
| Zhang [22] | 2011 | China | Asian | HCC | PIRA-PCR | HB | 934/1622 | 0.52 | 9 | ||
| Chen [23] | 2012 | China | Asian | CRC | PCR-LDR | HB | 126/407 | 0.79 | 7 | ||
| Chu [24] | 2012 | China | Asian | OSCC | PCR-RFLP | HB | 470/425 | 0.69 | 8 | ||
| Hezova [25] | 2012 | Czech | Caucasian | CRC | Taqman | HB | 197/212 | 0.29 | 7 | ||
| Kim [26] | 2012 | Korea | Asian | HCC | PCR-RFLP | PB | 286/201 | 0.36 | 7 | ||
| Min [27] | 2012 | Korea | Asian | CRC | PCR-RFLP | HB | 446/502 | 0.63 | 8 | ||
| Zhu [28] | 2012 | China | Asian | CRC | Taqman | HB | 573/588 | 0.79 | 8 | ||
| Ahn [29] | 2013 | Korea | Asian | Gastric cancer | PCR-RFLP | HB | 461/447 | 0.32 | 8 | ||
| Dikeakos [30] | 2013 | Greece | Caucasian | Gastric cancer | PCR-RFLP | HB | 163/480 | 0.85 | 7 | ||
| Vinci [31] | 2013 | Italy | Caucasian | CRC | HRMA | NR | 160/178 | 0.09 | 7 | ||
| Wang [32] | 2013 | China | Asian | ESCC | PCR-LDR | HB | 597/597 | 0.97 | 8 | ||
| Wei [33] | 2013 | China | Asian | ESCC | MassARRAY | HB | 367/370 | 0.14 | 7 | ||
| Chu [34] | 2014 | China | Asian | HCC | PCR-RFLP | HB | 188/377 | 0.99 | 7 | ||
| Kou [35] | 2014 | China | Asian | HCC | PCR-RFLP | PB | 271/532 | 0.00 | 8 | ||
| Kupcinskas [36] | 2014 | Lithuania | Caucasian | Gastric cancer | MassARRAY | HB | 363/351 | 0.16 | 7 | ||
| Pu [37] | 2014 | China | Asian | Gastric cancer | PCR-RFLP | HB | 220/530 | 0.00 | 8 | ||
| Qi [38] | 2014 | China | Asian | HCC | HRMA | PB | 314/407 | 0.16 | 7 | ||
| Zhang [39] | 2014 | China | Asian | HCC | MassARRAY | HB | 1000/1000 | 0.24 | 8 | ||
| Zhou [40] | 2014 | China | Asian | HCC | PCR-RFLP | PB | 266/281 | 0.02 | 8 | ||
| Li [41] | 2015 | China | Asian | HCC | PCR-RFLP | HB | 266/266 | 0.69 | 7 | ||
| Shen [42] | 2015 | China | Asian | ESCC | SNaPshot | HB | 1400/2185 | 0.04 | 8 | ||
| Sushma [43] | 2015 | India | Asian | OSCC | PCR-RFLP | PB | 100/102 | 0.00 | 6 | ||