GNAS and type 2 diabetes mellitus: Remarkably, GNAS is among the 11 genes showing consistent differentially expression in diabetic cell types (compared to non-diabetic) with same direction of effect in beta-cells (higher in T2D) in the first three studies and, furthermore, one (of 41 genes) found by both Lawlor et al. and Segerstolpe et al. with same direction of effect in alpha-cells (lower in T2D; Lawlor et al., 2017).