SLC11A1 and type 2 diabetes mellitus: Our findings showed a significant association between SLC11A1 polymorphisms and T2DM risk, where rs3731865 G/C markedly enhanced T2DM risk and both rs3731864 G/A and rs17235416 + TGTG/− TGTG variants significantly diminished the risk of this endocrine diseases under different genetic models.