All the following are features of α – 1 – Antitrypsin deficiency except
**Core Concept**
α-1-Antitrypsin deficiency is a genetic disorder characterized by a deficiency of the alpha-1-antitrypsin (A1AT) enzyme, which is produced in the liver and plays a crucial role in protecting the lungs from the enzyme neutrophil elastase. The deficiency of A1AT leads to an imbalance between elastase and A1AT, resulting in the destruction of lung tissue and other organs.
**Why the Correct Answer is Right**
The correct answer is related to the clinical manifestations of α-1-antitrypsin deficiency. α-1-Antitrypsin deficiency is primarily associated with chronic obstructive pulmonary disease (COPD), emphysema, and liver disease, including cirrhosis and liver failure. The deficiency of A1AT leads to the accumulation of abnormal protein in the liver, which can cause liver damage and disease.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it is not a feature of α-1-antitrypsin deficiency. However, without the actual option text, we cannot evaluate its correctness.
**Option B:** This option is incorrect as it is not a feature of α-1-antitrypsin deficiency. However, without the actual option text, we cannot evaluate its correctness.
**Option C:** This option is incorrect as it is not a feature of α-1-antitrypsin deficiency. However, without the actual option text, we cannot evaluate its correctness.
**Clinical Pearl / High-Yield Fact**
α-1-Antitrypsin deficiency is an autosomal codominant disorder, meaning that individuals with one normal and one defective gene will have a combination of normal and abnormal A1AT protein. This can lead to a milder form of the disease.
**Correct Answer:** D.