Abnormal serum alpha 2-macroglobulin in Dyggve-Melchior-Clausen syndrome.

The high levels of alpha 2-macroglobulin found in the serum of three patients suffering from Dyggve-Melchior-Clausen syndrome, an autosomal recessive metabolic disorder, resembling mucopolysaccharidoses, have been further characterised by crossed immunoelectrophoresis. The immunoprecipitate of patients' alpha 2-macroglobulin forms a double arc, this may be helpful in the diagnosis of the syndrome.