Recently evidence has accumulated that diabetic nephropathy clusters i
n families, both in insulin-dependent( IDDM) and non-insulin-dependent
(NIDDM) diabetic patients. Furthermore, hypertension and cardiovascul
ar accidents are found more frequently in families of NIDDM with diabe
tic nephropathy. Some observations in offspring of NIDDM patients with
diabetic nephropathy point to high urinary albumin excretion and slig
htly greater blood pressure values, both within the normal range compa
red to offspring of patients without diabetic nephropathy. Further fol
low-up is required to assess whether these findings are indicative of
a possible genetic predisposition to diabetic nephropathy.