The data obtained in our study were in accordance with the data published by Porojan et al. on a population from the center of Romania in whom increased frequencies of GSTM1 null and GSTT1 null genotypes in the T2DM group compared to controls were not observed (p = 0.171, OR = 1.444, 95% CI = 0.852–2.447; p = 0.647, OR = 0.854, 95% CI = 0.436–1.673). Here, GSTM1 is linked to type 2 diabetes mellitus.