IL6 and type 2 diabetes mellitus: The study of Chen et al. [7] indicated that IL-6 rs1800795, rs1800796 and rs1800797 might play important roles in diabetic nephropathy development while IL-6 rs2069837 and rs2069840 might not be related to diabetic nephropathy, but it is a pity that the data analyzed in the present study included both T1DM and T2DM, and the results of T2DM were not analyzed separately.