Correcting anaemia in these patients may prevent impairment of renal function. International guidelines indicate that haemoglobin level has to be of 110 g/L in these patients. We conduct an interventional randomized trial to evaluate the potential benefit of an haemoglobin level of 130 g/L in patients with type 2 diabetes and with a chronic kidney disease defined by a Cockcroft's creatinine clearance of 25 - 60 ml/min.