ART4 and type 1 diabetes mellitus: reported altered adrenergic signaling and loss of sympathetic innervation in individuals with non‐diabetic islet autoantibody‐positive, but not in T1D individuals.[3, 21] In a study utilizing the rat insulin promoter‐lymphocytic choriomeningitis virus‐glycoprotein (RIP‐LCMV‐GP) mouse model of T1D, Christoffersson et al.