Hereditary Deficiency of Serum α1-Antitrypsin

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Science  25 Dec 1964:
Vol. 146, Issue 3652, pp. 1678-1679
DOI: 10.1126/science.146.3652.1678


Deficiency of the serum α1,-antitrypsin appears to be under genetic control. The level of this protein is reduced to less than 10 percent of the norm in individuals homozygous for the trait, who may suffer from pulmonary emphysema. Heterozygous individuals have a concentration of serum α1-antitrypsin between 50 and 60 percent of normal, but appear to be in good health. The estimated heterozygous frequency of the trait in a small white population in Georgia is 2.1 percent.