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Trial registered on ANZCTR
Registration number
ACTRN12613001164785
Ethics application status
Not yet submitted
Date submitted
29/09/2013
Date registered
21/10/2013
Date last updated
21/10/2013
Type of registration
Prospectively registered
Titles & IDs
Public title
Do Defects in the Innate Immune System Contribute to Non-Cystic Fibrosis Bronchiectasis in Maori and Pacific Island Children?
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Scientific title
In Maori and Pacific Island children with Non-Cystic Fibrosis Bronchiectasis, will measurement of CD62 Ligand shedding detect defects of the innate immune system?
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Secondary ID [1]
283325
0
Nil
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Universal Trial Number (UTN)
U1111-1148-1091
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Non-Cystic Fibrosis Bronchiectasis in Maori and Pacific Island Children
290217
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Innate Immune Defects in Maori and Pacific Island Children
290218
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Condition category
Condition code
Respiratory
290607
290607
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0
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Other respiratory disorders / diseases
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Inflammatory and Immune System
290608
290608
0
0
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Other inflammatory or immune system disorders
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Measurement of CD62 Ligand shedding using flow cytometry to screen for defects in the Toll-like Receptor pathway of the innate immune system in Maori and Pacifica children with bronchiectasis. Participants will have CD62 Ligand shedding measured once only. Time to results is 2 hours. The total duration of the trial is 1 year with no follow up period.
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Intervention code [1]
288047
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Early detection / Screening
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Comparator / control treatment
Measurement of CD62 Ligand shedding using flow cytometry to screen for defects in the Toll-like receptor pathway of the innate immune system in healthy Maori and Pacific children (healthy controls).
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
290622
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To detect defects in the innate immune system in Maori and Pacifica children with bronchiectasis by measurement of CD62 Ligand shedding using flow cytometry.
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Assessment method [1]
290622
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Timepoint [1]
290622
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Once only within one year of study commencement
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Secondary outcome [1]
304923
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Utility of CD62 Ligand shedding assay using flow cytometry as a screen for innate immune defects.
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Assessment method [1]
304923
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Timepoint [1]
304923
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Once only within one year of study commencement
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Eligibility
Key inclusion criteria
Bronchiectasis group: <15 years old at time of enrolment, Maori or Pacifica, confirmed bronchiectasis on HRCT scan, clinical diagnosis by respiratory physician, consent to study.
Healthy control group: <15 years old at time of enrolment, Maori or Pacifica, consent to study.
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Minimum age
No limit
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Maximum age
15
Years
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
Bronchiectasis group: Cystic fibrosis not excluded as diagnosis, known primary immunodeficiency, primary ciliary dyskinesia, non-consent to study.
Healthy control group: Infectious comorbidities, history of recurrent infections or Rheumatic Fever, non-consent
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Study design
Purpose of the study
Diagnosis
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Bronchiectasis group. Participants will be identified from the Starship Children's Hospital Bronchiectasis database. Participants and their families will be provided with written and verbal information. Allocation is not concealed.
Healthy control group: Participants will be identified from the Starship Children's Hospital Orthopaedic Fracture Clinic or operating lists. Participants and their families will be provided with written and verbal information. Allocation is not concealed.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
n/a
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
Not Applicable
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Type of endpoint/s
Efficacy
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Statistical methods / analysis
Positive findings in 10% of the study population will be considered significant. However any positive findings will be considered clinically significant.
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
7/01/2014
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Actual
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Date of last participant enrolment
Anticipated
31/08/2014
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
100
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
5451
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New Zealand
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State/province [1]
5451
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Auckland
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Funding & Sponsors
Funding source category [1]
288061
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Hospital
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Name [1]
288061
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Auckland District Health Board - Starship Foundation Fellowship
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Address [1]
288061
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Park Road
Grafton
Auckland 1023
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Country [1]
288061
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New Zealand
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Primary sponsor type
Hospital
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Name
Starship Clinical Immunology and Allergy Department
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Address
Starship Children's Hospital
Park Road
Grafton
Auckland 1023
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Country
New Zealand
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Secondary sponsor category [1]
286783
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Hospital
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Name [1]
286783
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Starship Respiratory Department
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Address [1]
286783
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Starship Children's Hospital
Park Road
Grafton
Auckland 1023
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Country [1]
286783
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New Zealand
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Ethics approval
Ethics application status
Not yet submitted
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Ethics committee name [1]
289986
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Health and Disability Ethics Committee
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Ethics committee address [1]
289986
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Ministry of Health No 1 The Terrace PO Box 5013 Wellington 6011
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Ethics committee country [1]
289986
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New Zealand
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Date submitted for ethics approval [1]
289986
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01/10/2013
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Approval date [1]
289986
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Ethics approval number [1]
289986
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Summary
Brief summary
Bronchiectasis is an abnormal and irreversible dilatation of the bronchi or breathing tubes, leading to chronic cough, chest infections and breathing difficulties. It is common and severe in New Zealand with a prevalence of 1/3000 overall, but 1/1200 Maori and 1/650 Pacifica children. The cause is unknown in the majority of cases. Our clinical suspicion is that there is more than just social determinants placing these children at risk. The innate immune system provides the first line of defence against infection. Toll-like receptors (TLR) are part of the innate immune system that recognise pathogens, and it is possible to screen for problems with TLR by measuring the shedding of a protein called CD62 Ligand from cells. Our hypothesis is that defects in the Toll-like Receptor pathway of the innate immune system contribute to high rates of bronchiectasis in Maori and Pacifica children. Identification of a genetic predisposition to defects in the innate immune system would enable us to identify children at risk of bronchiectasis and intensify early prevention and treatment measures in order to reduce health inequalities.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Dr Annaliesse Blincoe
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Address
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Department of Paediatric Clinical Immunology and Allergy
Starship Children's Hospital
Private Bag 92024
Auckland
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Country
43374
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New Zealand
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Phone
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+64 9 3074949
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Fax
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Email
43374
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[email protected]
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Contact person for public queries
Name
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Annaliesse Blincoe
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Address
43375
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Department of Paediatric Clinical Immunology and Allergy
Starship Children's Hospital
Private Bag 92024
Auckland
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Country
43375
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New Zealand
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Phone
43375
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+64 9 3074949
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Fax
43375
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Email
43375
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[email protected]
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Contact person for scientific queries
Name
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Annaliesse Blincoe
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Address
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Department of Paediatric Clinical Immunology and Allergy
Starship Children's Hospital
Private Bag 92024
Auckland
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Country
43376
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New Zealand
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Phone
43376
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+64 9 3074949
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Fax
43376
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Email
43376
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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