As compared with the controls, the ratio of GLP‐1 expressing cells to chromogranin A expressing cells tended to be higher among all patients (p = 0.073) and was higher in the patients with T2D (p = 0.014), but not among the non‐T2D patients (p = 0.430; Mann–Whitney U test; Figure 6) as compared with the controls. This evidence concerns the gene CHGA and type 2 diabetes mellitus.