Three female infants in a single family developed a hemolytic uremic syndrome (HUS) at nearly identical ages, 11 1/2, 12, and 16 months respectively, years apart from each other. The course of the disease was characterized by slow onset, gradual deterioration and prolonged anuria in 2 siblings, hypertension and fatal outcome in all cases. A genetic predisposition for this type of familial HUS is probable and should be taken into account in genetic counseling.