alpha(1)-Antitrypsin (alpha(1)AT) deficiency is the most common geneti
c cause of liver disease in children and emphysema in adults. Therapy
for pulmonary disease attributable to alpha(1)AT deficiency includes a
lpha(1)AT augmentation therapy along with supportive measures. The alp
ha(1)AT preparation that is currently used for therapy is derived from
fractionated plasma. The results of clinical trials suggest that augm
entation therapy with alpha(1)AT slows the progression of emphysema an
d causes few adverse events. Patients with plasma levels of alpha(1)AT
that are <11 mu mol/L and who have airway obstruction should be consi
dered for augmentation therapy. Novel approaches include the administr
ation of aerosolised alpha(1)AT, recombinant alpha(1)AT, gene therapy
and synthetic elastase inhibitors.