Tapering off Inhaled Corticosteroids in Asthma patients after Reduction of Allergens

ISRCTN ISRCTN32862552
DOI https://doi.org/10.1186/ISRCTN32862552
Protocol serial number NTR370
Sponsor Care and Public Health Research Institute (CAPHRI), University Maastricht (Netherlands)
Funders Netherlands Organisation for Health Research and Development (ZonMw) (Netherlands), Netherlands Asthma Foundation (Netherlands), Boehringer Ingelheim BV (Netherlands), AstraZeneca BV (Netherlands)
Submission date
19/12/2005
Registration date
19/12/2005
Last edited
25/08/2009
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Respiratory
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Not provided at time of registration

Contact information

Prof C.P. Schayck, van
Scientific

University Maastricht
Care and Public Health Research Institute - CAPHRI
Department of General Practice
P.O. Box 616
Maastricht
6200 MD
Netherlands

Phone +31 (0)43 3882446
Email onno.vanschayck@hag.unimaas.nl

Study information

Primary study designInterventional
Study designMulticentre randomised double blind placebo controlled parallel group trial
Secondary study designRandomised controlled trial
Scientific title
Study acronymTICARA
Study objectivesAllergen avoidance allows tapering off inhaled corticosteroids (ICS) in house dust mite allergic asthma patients
Ethics approval(s)Received from local medical ethics committee
Health condition(s) or problem(s) studiedAsthma, Allergy
InterventionAll patients have been trained to use a self-management plan to adjust the dose of inhaled corticosteroids to symptoms and peak expiratory flow value.
After a run-in period of 3 months the intervention period with placebo controlled allergen avoidance started.
The participants in the intervention group received house dust mite impermeable covers for mattress, pillow and bedding.
The control group received placebo, house dust mite permeable, covers.
Intervention typeOther
Primary outcome measure(s)

Use of inhaled corticosteroids

Key secondary outcome measure(s)

1. Asthma control
2. Symptoms (dyspnoea, wheezing, coughing)
3. Peak flow parameters (morning peak flow, peak flow variability)

Completion date01/12/2004

Eligibility

Participant type(s)Patient
Age groupAdult
SexAll
Target sample size at registration150
Key inclusion criteria1. Age 16-60 years
2. Treatment for asthma by the GP
3. Use of inhaled corticosteroids
4. Allergy for house dust mite allergens
Key exclusion criteria1. Serious diseases other than asthma with a low survival rate
2. Other diseases, which influence bronchial symptoms and/or lung function
3. Exacerbation within one month before the start of the study
4. The use of oral steroids or inhaled cromoglycates
5. Use of house dust mite impermeable mattress/bedding covers
6. Allergy to cats or dogs while keeping these pets
Date of first enrolment01/01/1999
Date of final enrolment01/12/2004

Locations

Countries of recruitment

  • Netherlands

Study participating centre

University Maastricht
Maastricht
6200 MD
Netherlands

Results and Publications

Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/04/2006 Yes No