Eleven genes in the Glutathione metabolism pathway (Gpx7, Gss, Gsta3, Gstm2, Gstm5, Gstm7, Gsto1, Gstp1, Gstt1, Gstt2 and Mgst2) were observed in type 2 diabetes mellitus (Supplementary Figure S21). This evidence concerns the gene GSTO1 and type 2 diabetes mellitus.