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Updated: Jun 28, 2025
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Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
Published on: November 4, 2010
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Alpha-1 deficiency in severe asthma patients.
M Zappa1, S Grossi2, P Pignatti3
1Department of Medicine and Surgery, University of Insubria, Varese.
Summary
Severe asthma patients with non-MM Alpha-1 antitrypsin (AAT) deficiency genotypes show lower AAT levels and higher emphysema. MM genotype patients experienced better symptom control and reduced inflammation during follow-up.
Area of Science:
- Pulmonology
- Genetics
- Internal Medicine
Background:
- Alpha-1 antitrypsin (AAT) deficiency is an autosomal co-dominant condition affecting protein levels.
- The influence of specific SERPINA1 gene phenotypes on severe asthma outcomes requires further investigation.
Purpose of the Study:
- To compare disease control, inflammation, lung function, and comorbidities in severe asthma patients with non-MM SERPINA1 genotypes versus MM genotypes.
- To determine if SERPINA1 genotype impacts the follow-up of severe asthma patients.
Main Methods:
- Retrospective analysis of 73 severe asthma patients (GINA step 5) in an Italian clinic.
- Collection of clinical, biological, and functional data at baseline and over three years.
- Comparison between patients with non-MM (n=14) and MM (n=59) SERPINA1 genotypes.
Main Results:
- Non-MM genotype patients had lower serum AAT concentration and higher emphysema prevalence at baseline.
- Only MM genotype patients demonstrated significant improvement in Asthma Control Questionnaire (ACQ-6) scores.
- MM genotype patients also showed significant reduction in eosinophilic systemic inflammation during follow-up.
Conclusions:
- SERPINA1 genotype influences the clinical course and management of severe asthma.
- Screening for AAT deficiency is crucial in severe asthma patients to identify individuals who may benefit from specific monitoring or interventions.
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