ISRCTN ISRCTN12473810
DOI https://doi.org/10.1186/ISRCTN12473810
Secondary identifying numbers 14615
Submission date
03/01/2018
Registration date
10/01/2018
Last edited
06/08/2024
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Nutritional, Metabolic, Endocrine
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
Cystic fibrosis (CF) is an inherited condition where the lungs and digestive system become clogged with mucus. Lung infection is common and needs to be treated aggressively with antibiotics even if it isn’t causing many symptoms. Doctors need to use different antibiotics for different types of infection. In order to identify which bacteria is causing the infection, the child is often asked to give a cough swab, so that a sample of their airway liquids can be sent to the lab to see if anything grows. Cough swabs are relatively easy to obtain but are not as good a test as bronchoscopy, where a fibre-optic camera is put down into the large airway of the lungs so that mucus samples can be taken directly from the lower airway. Obviously having a bronchoscopy is a much larger procedure than having a cough swab, but sometimes it is necessary. Some CF centres feel everyone with CF should have a bronchoscopy every year. This study tests a third way of getting samples from the airway called induced sputum. This is a little bit more complicated than a cough swab but much less complicated than having a bronchoscopy. It involves the child inhaling a fine mist of salt water and getting some physiotherapy. The salt water inhalation causes the phlegm (or sputum) to loosen up so that it can be more easily coughed up from the lower airway. The aim of this study is to compare the induced sputum test to a cough swab, a throat swab and a nasal swab. If the child is going to have a bronchoscopy because their doctor feels he/she needs one, then the results will be compared to the results of the bronchoscopy as well. The aim is to find out just how beneficial induced sputum really is, if it is done just once in the year, as part of the annual review, over and above the many cough swabs that are taken over the year. Induced sputum can be done in the outpatient clinic or in the hospital ward and takes about 30 minutes. The technique is safe and used routinely in children with other respiratory illnesses. However, this kind of study needs to be done before using the induced sputum technique routinely in patients with CF, to make sure that the procedure is well tolerated and also that it makes a worthwhile contribution to improving healthcare.

Who can participate?
Patients aged 6 months to 18 years with cystic fibrosis undergoing bronchoscopy under the care of South, West and Mid Wales Paediatric CF centre

What does the study involve?
One of the CF physiotherapists takes a cough swab, a throat swab and a nasal swab and then starts the procedure for induced sputum. Oxygen levels and heart rate are monitored during the procedure. If the child is over 7 years of age then he/she is asked to do a lung function test before the procedure starts. The procedure involves a salty nebuliser (hypertonic saline) which lasts about 15 minutes. After each 5 minute period, the physiotherapist makes an assessment of the chest and gives appropriate physiotherapy or guides the child through breathing exercises to try and mobilise secretions. Any secretions are collected either into a pot, or by suction from the back of the throat. Lung function is tested again at the end of the procedure if appropriate. The final step is to take another cough swab.

What are the possible benefits and risks of participating?
The main benefit of this study is for the CF community as a whole, to find out whether induced sputum should become part of routine care. There are no immediate benefits to the patient from taking part in this study, but should any organisms be identified from the samples taken, then appropriate treatment is prescribed. All of the procedures used in this study are already used by doctors in the treatment of children. Sometimes the salty nebuliser can make the child cough and some children can wheeze. Generally it is well tolerated in all age groups.

Where is the study run from?
Noah’s Ark Children’s Hospital for Wales (UK)

When is the study starting and how long is it expected to run for?
March 2011 to June 2019

Who is funding the study?
NISCHR Academic Health Science Collaboration (UK)

Who is the main contact?
Dr Julian Forton

Contact information

Dr Julian Forton
Scientific

The Children's Hospital for Wales
Cardiff University School of Medicine
Cardiff
CF14 4XN
United Kingdom

Study information

Study designNon-randomised; Interventional
Primary study designInterventional
Secondary study designNon randomised study
Study setting(s)Hospital
Study typeTreatment
Participant information sheet ISRCTN12473810_PIS_11Dec14_V2_children.pdf
Scientific titleThe contribution of induced sputum sampling to surveillance of lower respiratory tract microbiology in children with Cystic Fibrosis.
Study objectivesThe Cystic Fibrosis Sputum Induction Trial (CF-SpIT) is prospective internally-controlled interventional single-centre trial in children with Cystic Fibrosis trial designed to test sputum-induction as an infection diagnostic for bacterial sampling in children with cystic fibrosis. The study aims to compare pathogen yield from sputum-induction, with concurrent standard cough swab, 1-lobe BAL, the gold standard 2-lobe BAL, and also to comprehensive 6-lobe BAL in order to identify the relative contribution of each approach.
Ethics approval(s)South East Wales Research Ethics Service (Committee C), 06/01/2012, ref: 11/WA/0334
Health condition(s) or problem(s) studiedSpecialty: Children, Primary sub-specialty: Respiratory and Cystic Fibrosis
InterventionSputum induction will be paired with routine interventions for bacterial surveillance in children with cystic fbrosis, so that paired comparisons between sputum induction and standard approaches for pathogen detection may be performed.

In stage 1, sputum induction is compared to paired cough swab. Sputum induction is performed immediately after cough swab. Patients are recruited in outpatient clinic or as an inpatient prior to receiving IV antibiotics.

In stage 2, sputum induction is compared to bronchoalveolar lavage (BAL). This will be performed in a subgroup of patients who have been recruited into stage 1, and who were also attending for a clinically indicated bronchoscopy and bronchoalveolar lavage (BAL). Specifically, sputum induction will be performed within the 24 hours prior to bronchoscopy and BAL, and compared to paired 1-lobe BAL, 2-lobe BAL, and 6-lobe BAL.
Intervention typeOther
Primary outcome measureStage 1: relative pathogen detection from sputum induction compared with cough swab
Stage 2: relative pathogen detection from sputum induction compared to 1-lobe BAL, gold standard 2-lobe BAL and 6-lobe BAL
Secondary outcome measuresNo secondary outcome measures
Overall study start date01/03/2011
Completion date30/06/2019

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participantsPlanned Sample Size: 200; UK Sample Size: 200
Key inclusion criteria1. Diagnosis of cystic fibrosis
2. Under the care of South, West and Mid Wales Paediatric CF centre
3. Age 6 months – 18 years
4. Either gender
5. Attending for clinically indicated bronchoscopy (stage 2)
6. Not on treatment course of antibiotics
Key exclusion criteria1. Clinical grounds as defined by attending consultant
2. Previous serious reaction to hypertonic saline nebulisation
Date of first enrolment20/02/2012
Date of final enrolment31/12/2018

Locations

Countries of recruitment

  • United Kingdom
  • Wales

Study participating centre

Noah’s Ark Children’s Hospital for Wales
Heath Park
Cardiff
CF14 4XW
United Kingdom

Sponsor information

University Hospital of Wales
Hospital/treatment centre

c/o Prof. Christopher Fegan
R&D Director
R&D Office
2nd Floor TB2
Cardiff
CF14 4XW
Wales
United Kingdom

ROR logo "ROR" https://ror.org/04fgpet95

Funders

Funder type

Government

NISCHR Academic Health Science Collaboration

No information available

Results and Publications

Intention to publish date30/06/2019
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryOther
Publication and dissemination planPlanned publication in a high-impact peer reviewed journal.
IPD sharing planThe datasets generated and/or analysed during the current study during this study will be included in the subsequent results publication.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Participant information sheet version V2 11/12/2014 21/05/2018 No Yes
Participant information sheet version V2 11/12/2014 21/05/2018 No Yes
Protocol file version V3 03/01/2018 21/05/2018 No No
Results article results 01/06/2018 Yes No
Other publications fungal diversity 01/08/2024 06/08/2024 Yes No

Additional files

ISRCTN12473810_PIS_11Dec14_V2_children.pdf
Uploaded 21/05/2018
ISRCTN12473810_PIS_11Dec14_V2_parents.pdf
Uploaded 21/05/2018
ISRCTN12473810_PROTOCOL_V3_03Jan2018.pdf
Uploaded 21/05/2018

Editorial Notes

06/08/2024: Publication reference added.
07/03/2019: Internal review.
21/05/2018: Publication reference added. Uploaded protocol Version 3, 3 January 2018 (not peer-reviewed).