Also known as: Alpha-1 AT Deficiency / Alpha₁-Antitrypsin Deficiency / Alpha 1-Antitrypsin (AAT) Deficiency / Alpha 1-antitrypsin Deficiency (AATD) / Alpha-1 Antitrypsin Deficiency (AATD) / Alpha1-antitrypsin Deficiency / Alpha1 Anti-Trypsin Deficiency / Alpha-1 Antitrypsin Deficiency / Alpha 1 Antitrypsin Deficiency / Alpha-1-Antitrypsin Deficiency / Alpha-1-antitrypsin-deficiency / Alpha 1-Antitrypsin Deficiency / Alpha-1-Antitrypsin deficiency (disorder) / Alpha-1 proteinase inhibitor deficiency