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A Comparison of Symbicort® Single Inhaler Therapy and Conventional Best Practice for the Treatment of Persistent Asthma (PASSION)

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: March 5, 2008
Last Update Posted: August 14, 2012
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Results First Submitted: September 18, 2009  
Study Type: Interventional
Study Design: Allocation: Randomized;   Intervention Model: Parallel Assignment;   Masking: None (Open Label);   Primary Purpose: Treatment
Condition: Asthma
Interventions: Drug: Symbicort TBH - Turbuhaler
Drug: beta-II-agonist, inhale steroid

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
FSI: LSI: LSO: Center type: Research and Training Host, Chest Medicine and Internal Medicine 23 Clinics. Number of enrolled subjects: 432, randomized: 430, completed patients: 344 ( Arm A:165, Arm B 179)

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
No text entered.

Reporting Groups
Symbicort Symbicort Single Inhaler Therapy ( Turbohaler 160/4.5 microg, 1 inh bid + as need)
Conventional BP Conventional Best Practice for Treatment of asthma

Participant Flow:   Overall Study
    Symbicort   Conventional BP
STARTED   209   221 
COMPLETED   165   179 
NOT COMPLETED   44   42 
Adverse Event                2                3 
Withdrawal by Subject                6                3 
Death                1                0 
Protocol Violation                5                1 
Lost to Follow-up                25                31 
Pregnancy                2                2 
Investigator Moved                3                0 
Treatment Failure                0                2 

  Baseline Characteristics
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Population Description
Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
No text entered.

Reporting Groups
Symbicort Symbicort Single Inhaler Therapy ( Turbohaler 160/4.5 microg, 1 inh bid + as need)
Conventional BP Conventional Best Practice for Treatment of asthma
Total Total of all reporting groups

Baseline Measures
   Symbicort   Conventional BP   Total 
Overall Participants Analyzed 
[Units: Participants]
 209   221   430 
[Units: Years]
Mean (Standard Deviation)
 44.28  (12.09)   45.17  (12.71)   44.7  (12.4) 
[Units: Participants]
Female   157   179   336 
Male   52   42   94 

  Outcome Measures
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1.  Primary:   Time to First Severe Asthma Exacerbation   [ Time Frame: 26 weeks ]

2.  Secondary:   Number of Severe Asthma Exacerbations   [ Time Frame: 26 weeks ]

3.  Secondary:   Change in Standardised Asthma Quality of Life Questionnaire (AQLQ(S)) Score   [ Time Frame: Baseline and 26 weeks ]

4.  Secondary:   Mean Use of As-needed Medication Per Day During Treatment Period   [ Time Frame: Daily recording during the treatment period of 26 weeks ]

  Serious Adverse Events

  Other Adverse Events

  Limitations and Caveats
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Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
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  More Information
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Certain Agreements:  
Principal Investigators are NOT employed by the organization sponsoring the study.
There is NOT an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.

Results Point of Contact:  
Name/Title: Gerard Lynch
Organization: AstraZeneca
phone: +44 1509 645895
e-mail: aztrial_results_posting@astrazeneca.com

Responsible Party: AstraZeneca
ClinicalTrials.gov Identifier: NCT00628758     History of Changes
Other Study ID Numbers: D5890L00016
First Submitted: January 10, 2008
First Posted: March 5, 2008
Results First Submitted: September 18, 2009
Results First Posted: August 14, 2012
Last Update Posted: August 14, 2012