Familial Clustering of Diabetic Kidney Disease

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Abstract
Diabetic nephropathy develops in less than half of all patients with diabetes. To study heredity as a possible risk factor for diabetic kidney disease, we examined the concordance rates for diabetic nephropathy in two sets of families in which both probands and siblings had diabetes mellitus. In one set, the probands (n = 11) had no evidence of diabetic nephropathy, with normal creatinine clearance and a urinary albumin excretion rate below 45 mg per day. In the other set, the probands (n = 26) had undergone kidney transplantation because of diabetic nephropathy.