ISRCTN ISRCTN12455871
DOI https://doi.org/10.1186/ISRCTN12455871
Integrated Research Application System (IRAS) 236191
Protocol serial number IRAS 236191; CPMS 39463
Sponsor Imperial College London
Funder Royal Marsden Partners
Submission date
07/06/2018
Registration date
27/06/2019
Last edited
03/07/2025
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
Smoking is a major cause of ill health including lung disease, health disease and cancer. It is important that the NHS makes use of the best approaches to help people to stop smoking. People with a history of smoking are now being offered screening by CT scan in order to detect early lung cancer so these can be treated and cured. This screening program is also an opportunity to help people to quit smoking. The usual approach would be to direct individuals to NHS or local authority smoking cessation services. The aim of this study is to see if a more intense approach, where smokers can see a smoking cessation counsellor immediately, is more effective.

Who can participate?
Smokers aged 55 to 75 who wish to quit who are going through the screening programme

What does the study involve?
Participants are randomly allocated to receive either immediate smoking cessation input including pharmacotherapy (drug treatment) or usual care, which is advice and signposting to local services. Smoking rates are compared 3 months later.

What are the possible benefits and risks of participating?
The intervention may increase the likelihood of quitting smoking.

Where is the study run from?
Royal Brompton and Harefield NHS Foundation Trust (UK)

When is the study starting and how long is it expected to run for?
February 2018 to October 2022

Who is funding the study?
Royal Marsden Partners (UK)

Who is the main contact?
1. Dr Nicholas Hopkinson
n.hopkinson@ic.ac.uk
2. Dr Ahmad Sadaka
a.sadaka@rbht.nhs.uk

Contact information

Dr Nicholas Hopkinson
Scientific

NHLI, Imperial College
Royal Brompton Hospital Campus
Fulham Road
London
SW3 6NP
United Kingdom

ORCiD logoORCID ID 0000-0003-3235-0454
Phone +44 (0)20 7351 8029
Email n.hopkinson@ic.ac.uk
Dr Ahmad Sadaka
Public

Muscle Lab
Royal Brompton Hospital
Fulham Road
London
SW3 6NP
United Kingdom

Study information

Primary study designInterventional
Study designRandomized; Interventional; Design type: Treatment, Screening, Drug, Education or Self-Management, Imaging, Psychological & Behavioural, Complex Intervention
Secondary study designRandomised controlled trial
Study type Participant information sheet
Scientific titleQuLIT – the Quit smoking Lung health Intervention Trial
Study acronymQuLIT
Study objectivesIn people who smoke attending a lung cancer CT screening programme, does the provision of immediate smoking cessation support including pharmacotherapy compared to signposting to a smoking cessation service improve quit rates at 3 months?
Ethics approval(s)Approved 30/04/2018, South Central - Oxford C Research Ethics Committee (Level 3, Block B, Whitefriars Building, Lewins Mead, Bristol, BS1 2NT; Tel: +44 (0)20 7104 8049; Email: nrescommittee.southcentral-oxfordc@nhs.net), REC ref:18/SC/0236
Health condition(s) or problem(s) studiedSmoking cessation
InterventionCurrent interventions as of 25/06/2021:
A study comparing the effectiveness of two different smoking cessation strategies applied in a pseudo-randomised fashion. Smokers attending a lung health screening service, focussed on CT screening to detect early lung cancer, will receive either:
1. Immediate smoking cessation input including pharmacotherapy
2. Usual care, which will be advice and signposting to local services

Limited resources mean that a specialist smoking cessation practitioner will only be available on 5 days every fortnight so treatment allocation will depend on this (i.e., which day patients attend on).

Follow up will be by a phone call at 3 months.

For participants recruited prior to March 2020 the smoking cessation intervention was delivered in face-to-face sessions. Recruitment to the study was then paused as a result of public health guidance during the COVID-19 pandemic. Recruitment then began again in January 2021 with telephone smoking cessation support offered as the method of intervention delivery.


Previous interventions:
A study comparing the effectiveness of two different smoking cessation strategies applied in a pseudo-randomised fashion. Smokers attending a lung health screening service, focussed on CT screening to detect early lung cancer, will receive either:
1. Immediate smoking cessation input including pharmacotherapy
2. Usual care, which will be advice and signposting to local services

Limited resources mean that a specialist smoking cessation practitioner will only be available on 5 days every fortnight so treatment allocation will depend on this (i.e., which day patients attend on).

Follow up will be by phone call at 3 months.
Intervention typeMixed
Primary outcome measure(s)

Quit rate in those wishing to quit, based on self-report by telephone call at 3 months following the initial screening visit

Key secondary outcome measure(s)

Current secondary outcome measures as of 18/05/2022:
1. Quit rate in all screening program participants, based on self-report by telephone call at 3 months following the initial screening visit
2. Mortality at 1 year (available as part of the routine evaluation of the screening protocol)
3. Quit rate at 1 year

Exploratory outcomes:
1. The impact of the smoking cessation interventions (based on self-report by telephone call at three months) in different baseline groups including:
1.1. Those with new abnormal findings found as part of screening (e.g. spirometry)
1.2. Those with or without an abnormal CT finding that requires further follow up
2. The number of individuals who are smoking and who wish to quit will also be documented to provide guidance for service development and resource requirements


Previous secondary outcome measures:
1. Quit rate in all screening program participants, based on self-report by telephone call at 3 months following the initial screening visit
2. Mortality at 1 year (available as part of the routine evaluation of the screening protocol)

Exploratory outcomes:
1. The impact of the smoking cessation interventions (based on self-report by telephone call at three months) in different baseline groups including:
1.1. Those with new abnormal findings found as part of screening (e.g. spirometry)
1.2. Those with or without an abnormal CT finding that requires further follow up
2. The number of individuals who are smoking and who wish to quit will also be documented to provide guidance for service development and resource requirements

Completion date31/10/2022

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit55 Years
Upper age limit75 Years
SexAll
Target sample size at registration130
Total final enrolment430
Key inclusion criteriaCurrent participant inclusion criteria as of 24/06/2021:
1. Participant in the clinical lung health screening programme (aged 55 to 75 years recorded as ever smokers in their medical records)
2. Current smoker
3. Only those who express a wish to quit smoking will be included in the primary endpoint analysis

Previous participant inclusion criteria:
1. Participant in the clinical lung health screening programme (aged 50 to 65 years and any history of smoking)
2. Current smoker
3. Only those who express a wish to quit smoking will be included in the primary endpoint analysis
Key exclusion criteriaNon-smokers
Date of first enrolment01/08/2019
Date of final enrolment02/02/2022

Locations

Countries of recruitment

  • United Kingdom
  • England

Study participating centre

Royal Brompton and Harefield NHS Foundation Trust
Fulham Road
London
SW3 6NP
United Kingdom

Results and Publications

Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
IPD sharing planAnonymized research data will be shared with third parties via a request to the senior author (NSH).

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article Results at 3 months 01/02/2022 07/02/2022 Yes No
Results article Results at 12 months and intervention delivery method 24/10/2023 25/10/2023 Yes No
Results article 03/08/2022 03/07/2025 Yes No
HRA research summary 28/06/2023 No No
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes
Protocol file 28/02/2018 01/07/2019 No No
Protocol file version 2 11/12/2020 30/12/2021 No No

Additional files

ISRCTN12455871_PROTOCOL_28Feb18.pdf
Uploaded 01/07/2019
ISRCTN12455871_Protocol_V2_11Dec2020.pdf
Protocol file

Editorial Notes

03/07/2025: Publication reference added.
25/10/2023: Publication reference and total final enrolment added.
17/10/2022: The intention to publish date has been changed from 31/12/2022 to 31/03/2023.
18/05/2022: The following changes have been made:
1. The secondary outcome measures have been updated.
2. The overall trial end date has been changed from 02/05/2022 to 31/10/2022 and the plain English summary has been updated to reflect this change.
3. The participant information sheet field has been added.
07/02/2022: Publication reference added.
30/12/2021: The following changes have been made:
1. Protocol file uploaded.
2. The total target enrolment has been changed from 110 to 130.
25/06/2021: The following changes have been made:
1. The interventions have been updated.
2. The publication and dissemination plan has been updated.
24/06/2021: The following changes have been made:
1. The participant inclusion criteria have been updated and the plain English summary has been updated to reflect this change.
2. The IPD sharing statement has been added and the participant level data has been changed from To be made available at a later date to Available on request.
01/12/2020: The following changes were made to the trial record:
1. The recruitment end date was changed from 01/12/2020 to 02/02/2022.
2. The overall end date was changed from 01/04/2021 to 02/05/2022.
3. The intention to publish date was changed from 31/12/2021 to 31/12/2022.
4. The plain English summary was updated to reflect these changes.
18/06/2020: Contact details updated.
01/07/2019: Protocol file uploaded (not peer-reviewed).
03/06/2019: Trial's existence confirmed by the NIHR.