Symptoms of SERPINA1 Gene Antitrypsin-alpha-1 Deficiency Genetic Test Alpha-1 Antitrypsin Deficiency (AATD) is a genetic condition that can lead to serious lung and liver disease. It is caused by mutations in the SERPINA1 gene, which instructs the body on how to create the protein alpha-1 antitrypsin (AAT). This protein protects the lungs from inflammation caused […]











