“…Although several studies and few meta-analyses have evaluated the association between IL-10 gene polymorphisms with the risk of development of T2DM in different ethnic populations, their results showed controversies and inconsistencies that might be due relatively small sample size, selection bias and ethnic difference ( Bai, H, et al, 2014 , Helaly, MA and Hatata, EZ, 2013 , Kung, WJ, et al, 2010 , Yin, YW, et al, 2012 , Li, J, et al, 2013 , Zhang, F, et al, 2013 , Mtiraoui, N, et al, 2009 ). Another issue of concern is the under-representation of African-based studies.…”