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Related Experiment Videos

Allergen immunotherapy for asthma.

M J Abramson1, R M Puy, J M Weiner

  • 1Epidemiology & Preventive Medicine, Monash University, Central & Eastern Clinical School, The Alfred, Melbourne, Vic, Australia, 3004.

The Cochrane Database of Systematic Reviews
|October 30, 2003
PubMed
Summary
This summary is machine-generated.

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Allergen specific immunotherapy for asthma significantly reduces symptoms and medication needs, while improving bronchial hyper-reactivity. However, potential severe adverse effects like anaphylaxis must be carefully considered.

Area of Science:

  • Allergy and Immunology
  • Respiratory Medicine
  • Clinical Trials

Background:

  • Allergen specific immunotherapy (ASIT) for asthma remains controversial due to demonstrated benefits versus risks of anaphylaxis.
  • Professional recommendations for ASIT in asthma vary widely.
  • Growing interest in novel allergen preparations and delivery methods necessitates updated systematic reviews.

Purpose of the Study:

  • To systematically review and assess the efficacy of allergen specific immunotherapy for asthma treatment.
  • To evaluate the impact of ASIT on asthma symptoms, medication use, and bronchial hyper-reactivity.

Main Methods:

  • Conducted a systematic review of randomized controlled trials (RCTs) up to June 2001.
  • Searched multiple databases including Cochrane Airways Group trials register, MEDLINE, and others.

Related Experiment Videos

  • Included 75 RCTs involving 3,506 participants (3,188 with asthma), assessing various allergens and outcomes.

    • Main Results:

    • ASIT significantly reduced asthma symptoms (SMD -0.72) and the need for asthma medications.
    • Therapy improved both allergen-specific and non-specific bronchial hyper-reactivity.
    • No consistent effects on lung function were observed; allocation concealment was adequate in only 15 trials.

    Conclusions:

    • Allergen immunotherapy effectively reduces asthma symptoms and medication requirements.
    • The treatment improves bronchial hyper-reactivity, with benefits potentially comparable to inhaled corticosteroids.
    • The risk of adverse events, including anaphylaxis, necessitates careful consideration during ASIT.