Current Practices for Severe Alpha-1 Antitrypsin Deficiency Associated COPD and Emphysema

Alpha-1 antitrypsin deficiency is a genetic disorder that can lead to chronic obstructive pulmonary disease and emphysema. Although it is the most well-studied genetic risk factor for emphysema, data is still scarce. Traditionally, medical therapy is similar to standard chronic obstructive pulmonary disease patients. Over the past several decades, enzyme augmentation therapy has emerged as a highly utilized alpha-1 antitrypsin-specific therapy. It has become the standard of care for severe alpha-1 antitrypsin deficiency despite unclear effects on a multitude of clinical outcomes. Significant data supports interventional therapies, including lung volume reduction surgery and bronchoscopic lung volume reduction, for chronic obstructive pulmonary disease patients without alpha-1 antitrypsin deficiency. These interventions have less robust data in the treatment of alpha-1 antitrypsin-induced chronic obstructive pulmonary disease. This review will explore the data regarding various treatment options for severe alpha-1 antitrypsin deficiency associated with chronic obstructive pulmonary disease and emphysema.