Development and Validation of a Sputum Biomarker mRNA Panel for the Diagnostic Work-up of Asthma 4. (BioSput-Air)

This study is currently recruiting participants. (see Contacts and Locations)
Verified December 2014 by Universitaire Ziekenhuizen Leuven
Information provided by (Responsible Party):
Dominque Bullens, Universitaire Ziekenhuizen Leuven Identifier:
First received: October 18, 2010
Last updated: December 2, 2014
Last verified: December 2014

The main objectives of the study are:

1. To unravel the importance of molecular phenotyping in predicting the response to antimicrobial therapy with potential anti-inflammatory potency

The investigators have developed a non-invasive technique based on mRNA analysis of induced sputum that enables us to study airway inflammation in detail. This technique forms the basis for our current project based on the following hypotheses:

  1. Different molecular asthma phenotypes exist: a Th2 phenotype and a non Th2 phenotype as reported by Woodruff and colleagues (Woodruff PG et al). Sputum mRNA cytokine levels can be used to diagnose Th2 asthma and discriminate this from non-Th2 asthma.
  2. Based on our previous research and preliminary data that non-Th2 asthma can be further divided in Th17 asthma and Th1+Th2 asthma; besides these, a fourth group without Th2, Th17 or Th1 characteristics also exist.
  3. These subgroups have different responses to anti-microbial therapy with potential anti-inflammatory potency (macrolides).

Condition Intervention
Asthmatic Patients
Drug: azithromycin

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Development and Validation of a Sputum Biomarker mRNA Panel for the Diagnostic Work-up of Asthma 4.

Resource links provided by NLM:

Further study details as provided by Universitaire Ziekenhuizen Leuven:

Primary Outcome Measures:
  • sputum cytokine mRNA [ Time Frame: 3 months ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • responsiveness to the medication [ Time Frame: 3 months ] [ Designated as safety issue: No ]

Estimated Enrollment: 20
Study Start Date: July 2011
Estimated Study Completion Date: December 2015
Estimated Primary Completion Date: July 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: azithromycin Drug: azithromycin
azithromycin 500 mg 3/week for 3 months


Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • severe asthmatics (GINA step 4 or step 5 (without anti-IgE))

Exclusion Criteria:

  • viral/fungal/bacterial infection +fever (<1 month)
  • asthma exacerbation (<3 months)
  • other respiratory disease (CF, ciliary dyskinesia,bronchiectasis)
  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: NCT01224977

University Hospital of Leuven Recruiting
Leuven, Vlaams-Brabant, Belgium, 3000
Contact: Sven F Seys, MSc    +32 16 346165   
Contact: Dominique MA Bullens, MD, PhD    +32 16 346137   
Sponsors and Collaborators
Universitaire Ziekenhuizen Leuven
Principal Investigator: Dominique MA Bullens, MD,PhD Lab of clinical immunology, O&N I Herestraat 49 - bus 811, 3000 Leuven, België
Study Director: Sven F Seys, MSc Lab of clinical immunology, O&N I Herestraat 49 - bus 811, 3000 Leuven, België
  More Information

Responsible Party: Dominque Bullens, prof. dr., Universitaire Ziekenhuizen Leuven Identifier: NCT01224977     History of Changes
Other Study ID Numbers: Biomarker sputum airway study4 
Study First Received: October 18, 2010
Last Updated: December 2, 2014
Health Authority: Belgium: Ethics Committee processed this record on May 25, 2016