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Alpha1-antitrypsin deficiency with M-like phenotype.
  1. F Kueppers,
  2. G Utz,
  3. B Simon

    Abstract

    A patient with a low serum concentration of alpha1-antitrypsin (0-1 g/l) but with an M-like phenotype is described. Her parents and 2 sibs have a PIM phenotype, but all except the father have approximately half-normal levels of alpha1-antitrypsin: The M-like variant apparently cannot be distinguished from M-alpha1-antitrypsin, when it occurs with M in heterozygotes. The proposita has severe airways obstruction and emphysema, and her father has moderate chronic obstructive pulmonary disease. The mother and 2 sibs are healthy.

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