| | Cases | Controls | Ethnicity | OR | MAF for patients/controls |
| Di Fonzo et al., 2006 [6] | 582/10 | 341/3 | Han Chinese from Taiwan | 1.95 (0.53–7.15), | 0.008/0.004 | Nuytemans et al., 2009 [27] | 620/1 | 540/0 | Belgian | | | Jasinska-Myga, 2010 [12] | 165/0 | 364/0 | Arab-Berber ethnicity | n/a | | Tan et al., 2010 [28] | 250/0 | 250/0 | Han Chinese | n/a | | Ross et al., 2011 [23] | 1,376 | 962 | Japan, Korea, Taiwan | OR: 2.27, 95% CI: 1.35–3.83, | | | Japan PD: 173 | Control: 75 | | Japan: OR 1.26 (0.38 to 4.22) | | | Korea PD: 844 | Control: 587 | | Korea: OR 2.21 (1.2 to 4.06) | | | Taiwan PD: 369 | Control: 300 | | Taiwan: OR 7.51 (0.95 to 59.6) | | Li et al., 2012 [29] | 729/22 | 585/4 | Han Chinese | OR, 4.14; 95% CI: 1.53–12.74 | 0.015 | Wu et al., 2012 [30] | 1517/13 | 1487/13 | Han Chinese from China and Singapore Taiwanese | 0.98 (0.45 to 2.18) | 0.004 | Gopalai et al., 2013 [31] | 404/1 | 424/3 | Chinese (223/236), Malay (122/110), and Indian (59/78) | 0.35, 95% CI: 0.01 to 3.79; | 0.002 cases 0.004 Controls | Heckman et al., 2013 [32] | 369/10 | 300/1 | Taiwan, South Korea, Japan | OR 8.33 (1.06–65.43) | Taiwanese 0.013 Japanese – 0.026 South Korea 0.029 | Wu-Chou et al., 2013 [33] | 626/0 | 473/0 | Han Chinese from Taiwan | n/a | | Li et al., 2015 [26] | 500/18 | 574/9 | Chinese | OR 2.57, 95% CI: 1.13–5.86, | 0.018 |
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