[Serum lipoproteins in family members of myocardial infarct victims].

Men 40 to 59 years old, first degree relatives of patients with myocardial infarction had a lower HDL-cholesterol concentration than a control group. This is in analogy with the low concentration of HDL-cholesterol observed in the myocardial infarction patients themselves. LDL and VLDL in relatives were not elevated in comparison to the controls. The low HDL-cholesterol could be the expression of a familial defect in cholesterol transport.