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SMILDA - Symbicort®Turbuhaler® Allergan Challenge Study in Allergic Patients With Mild Asthma

This study has been completed.
Information provided by:
AstraZeneca Identifier:
First received: February 7, 2006
Last updated: January 21, 2011
Last verified: January 2011

To compare the effects of formoterol alone (Oxis® TurbuhalerÒ) and the fixed combination of formoterol and budesonide (Symbicort® TurbuhalerÒ) on airway responsiveness as a marker of inflammation, induced by repeated low-dose allergen challenge in allergic patients with mild asthma

Condition Intervention Phase
Drug: formoterol
Drug: budesonide/formoterol
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Official Title: A Comparative, Placebo-controlled, Double Blind, Double Dummy, Cross-over, Single Centre, Phase IIIb Study Between Formoterol Alone (Oxis® Turbuhaler® 4.5 µg) and the Fixed Combination of Formoterol and Budesonide (Symbicort® Turbuhaler®160/4.5 µg) on Airway Responsiveness and Airway Inflammation Induced by Repeated Low-dose Allergen Challenge in Allergic Patients With Mild Asthma

Resource links provided by NLM:

Further study details as provided by AstraZeneca:

Primary Outcome Measures:
  • PD20 methacholine (measured as the change using the measurement before and after each treatment period).

Secondary Outcome Measures:
  • eNO (ppb).
  • Forced Expiratory Volume in one second (FEV1 ) - Induced sputum:
  • Total and differential blood cell count
  • Different Biomarkers
  • Safety endpoints will be incidence of Serious Adverse Events (SAEs)
  • Discontinuation due to Adverse Events (DAEs).

Estimated Enrollment: 16
Study Start Date: October 2004
Study Completion Date: May 2006

Ages Eligible for Study:   18 Years to 55 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • A diagnosed history of asthma for at least 6 months
  • Mild and stable asthma, only using β2-agonists as needed for the last 4 weeks.
  • FEV1 >70% of predicted normal value (post-bronchodilator value).
  • Skin prick test positive to pollen, animal dander or house dust mite.

Exclusion Criteria:

  • Any significant respiratory disease, other than asthma.
  • Upper or lower respiratory tract infection within 4 weeks before inclusion.
  • Use of:

    1. inhaled glucocorticosteroid treatment for the last 8 weeks prior to inclusion or ever used oral glucocorticoid treatment for asthma.
    2. inhaled long-acting or oral b2-agonists, anticholinergic bronchodilators, cromones, antihistamines, theophyllines and anti-leukotrienes within 2 weeks of screening.
    3. regular NSAIDs
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00288379

Research Site
Stockholm, Sweden
Sponsors and Collaborators
Study Director: AstraZeneca Symbicort Medical Science Director, MD AstraZeneca
  More Information

No publications provided Identifier: NCT00288379     History of Changes
Other Study ID Numbers: D5890L00007, EudraCT No 2004-000211-26
Study First Received: February 7, 2006
Last Updated: January 21, 2011
Health Authority: Sweden: Medical Products Agency

Keywords provided by AstraZeneca:
allergen challenge
airway responsiveness
airway inflammation

Additional relevant MeSH terms:
Bronchial Diseases
Hypersensitivity, Immediate
Immune System Diseases
Lung Diseases
Lung Diseases, Obstructive
Respiratory Hypersensitivity
Respiratory Tract Diseases
Adrenergic Agents
Adrenergic Agonists
Adrenergic beta-2 Receptor Agonists
Adrenergic beta-Agonists
Anti-Asthmatic Agents
Anti-Inflammatory Agents
Autonomic Agents
Bronchodilator Agents
Hormones, Hormone Substitutes, and Hormone Antagonists
Molecular Mechanisms of Pharmacological Action
Neurotransmitter Agents
Peripheral Nervous System Agents
Pharmacologic Actions
Physiological Effects of Drugs
Respiratory System Agents
Therapeutic Uses processed this record on November 27, 2014