GGT7 and type 2 diabetes mellitus: Haplotypes rs6119534T–rs11546155G (OR 0.80, 95% CI 0.68–0.95) and rs6119534C–rs11546155A (OR 0.76, 95% CI 0.61–0.94) of the GGT7 gene were associated with a decreased T2D risk.