INS and type 2 diabetes mellitus: Patients with T1D rapidly develop severe insulin deficiency, leading to high glycemic instability and so require accurate insulin replacement (such as multiple injections and carbohydrate counting), and have poor response to non-insulin therapies.3, 5 Patients with T2D still continue to produce substantial amounts of their own insulin, and, therefore, respond to non-insulin therapy, have more stable glycaemia and, if insulin treatment is needed, may achieve good control with non-physiological insulin regimes.6, 7