This study is designated to evaluate the effect of a patients' educational program called DiaNe® for consultation and support people with diabetic kidney disease in an early stage. The aim of the study is to examine if the program is suitable to stop deterioration of kidney function and to maintain or improve glycemic control. The consultation and support program DiaNe® substantially contributes to a better understanding of the affected clients for this complex clinical picture, allows them for specific interventions and creates the rationale for an active therapeutic relationship.