Among them cytokines proposed to be involved in the pathogenesis of T2DM are members of the interleukin (IL)‐1 and IL‐12 cytokine families,5, 6 but some of these cytokines have been neither extensively explored (i.e., IL‐37) nor investigated (i.e., IL‐39). Here, IL37 is linked to type 2 diabetes mellitus.