Suspecting and Testing for Alpha-1 Antitrypsin Deficiency-An Allergist's and/or Immunologist's Perspective

Area of Science:

• Pulmonology
• Genetics
• Immunology

Background:

• Alpha-1 antitrypsin deficiency (AATD) is an inherited disorder frequently overlooked due to non-specific respiratory symptoms.
• Patients often receive misdiagnoses like asthma or COPD, delaying appropriate management.
• AATD can manifest with extra-pulmonary symptoms affecting the liver, vasculature, and skin.

Purpose of the Study:

• To increase awareness of AATD among allergists and immunologists.
• To provide a comprehensive overview of AATD's etiology, diagnostic methods, and management.
• To highlight the importance of early diagnosis for preventing irreversible lung damage.

Main Methods:

• Review of current literature on AATD.
• Discussion of diagnostic tests including serum A1-PI levels, phenotyping, genotyping, and gene sequencing.
• Evaluation of therapeutic strategies, focusing on intravenous A1-PI augmentation therapy.

Main Results:

• Intravenous A1-PI augmentation therapy has shown efficacy in slowing pulmonary tissue deterioration.
• A range of tests are available for confirming AATD diagnosis.
• Early intervention can significantly impact disease progression.

Conclusions:

• AATD requires greater physician awareness, particularly among those treating obstructive lung diseases.
• Prompt diagnosis and management, including A1-PI therapy, are vital for patients with AATD.
• This review emphasizes the allergist/immunologist's role in identifying and managing AATD.