Our group and others have shown that even years after diagnosis of type 1 DM, viable beta cells are present and able to secrete at least low amounts of insulin.2, 3 Since residual beta‐cell function prevents complications such as retinopathy, nephropathy and hypoglycaemia,4 it is of great interest to preserve and enhance the function of these remaining insulin‐producing cells. Here, INS is linked to Nephropathy.