Alpha-1 Antitrypsin Deficiency
Alpha-1 antitrypsin deficiency occurs when the alpha-1 antitrypsin protein, made in the liver, is produced in the wrong shape and becomes trapped inside liver cells instead of entering the bloodstream. This buildup can damage the liver over time, while the resulting shortage of the protein in circulation also raises the risk of lung disease.
- Risk:
- Inherited SERPINA1 gene mutation (severe deficiency, Pi*ZZ)
- Progression:
- Liver injury can start in infancy; about 15% of affected adults develop cirrhosis
