SERPINA1 (Serpin Family A Member 1): SERPINA1, also known as alpha-1-antitrypsin, is a major protease inhibitor, primarily produced in the liver, and plays a vital role in protecting the lungs from neutrophil elastase. Deficiency in SERPINA1 can lead to alpha-1 antitrypsin deficiency, a genetic disorder that causes lung diseases like emphysema and chronic obstructive pulmonary disease (COPD), as well as liver diseases. It is crucial in maintaining the balance of proteolytic activity in lung tissues....