“…In our study, 12 eligible studies involved IL-10-1082A/G and IL-10-592C/A polymorphisms (Dondeti, El-maadawy, & Talaat, 2016, Gao et al, 2016,Gusatti et al, 2016, Yao et al, 2015, Manjita et al, 2014, Sofian et al, 2013Ge et al, 2009, Baghi, Alavian, Mehrnoush, & Salimi, 2015, Q. Gao et al, 2017) Sofian et al, 2013, 8 eligible studies involved INF-γ +874 (Heidari et al, 2016, Yao et al, 2015, Migita et al, 2005, Ognjanovic, Yuan, Chaptman, Fan, & Yu, 2009, 9 studies involved TNF-α (Panigrahi et al, 2014, Gusatti et al, 2016, Panigrahi et al, 2014, Migita et al, 2005, Q. Gao et al, 2017, Ognjanovic et al, 2009, Kim et al, 2018, Fletcher et al, 2011 and 5 studies involved VDR (Falleti et al, 2010,Suneetha et al, 2006, Peng et al, 2014, Elmer, Tuncbilek, Aydin, & Hizel, 2013, X. Yao et al, 2013. The numbers of quality scores for each study for each study were summarized in Table 1.…”