The Evaluation of FeNO for Predicting Response to ICS in Subjects With Non-specific Respiratory Symptoms (NSRS)
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|ClinicalTrials.gov Identifier: NCT02294279|
Recruitment Status : Completed
First Posted : November 19, 2014
Last Update Posted : April 25, 2017
Nitric Oxide is recognized as a biological marker for many chronic airway diseases. It has been standardised for clinical use indicating airway inflammation.
In clinical practice, FeNO can aid confirmation of an asthma diagnosis and can indicate the degree of steroid-responsiveness. This can help guide physician decisions on the initiation of inhaled corticosteroid (ICS) therapy, or adjustment of ICS therapy.
Therefore, FeNO measurement could be particularly useful to confirm an asthma diagnosis in patients with non-specific respiratory symptoms (≥ 6 weeks of cough and/or wheezing and/or chronic dyspnoea) and to assess how likely they are to benefit from corticosteroid treatment.
This study will assess the suitability of FeNO to predict ICS responsiveness in patients with non-specific respiratory symptoms.
Additionally, we would like to determine the suitability of FeNO as a diagnostic tool for asthma in comparison to conventional predictors, e.g. spirometry.
|Condition or disease||Intervention/treatment||Phase|
|Asthma||Drug: Qvar (100 mcg)||Phase 4|
Randomised, double-blind, placebo-controlled trial with planned enrolment of 264 patients from the UK and Singapore. Eligible patients are 18-80 years old with ≥6 weeks' duration of non-specific respiratory symptoms defined as cough and/or wheeze and/or dyspnoea. Patients with FEV1 <90% predicted at visit 1 must show reversibility of <20% at visit 1 or within the prior year. Key exclusion criteria are prior diagnosis of asthma; evidence of concomitant chronic respiratory disease, respiratory tract infection; or known significant risk factor for cough or wheeze.
Baseline assessments will include spirometry (FEV1, forced vital capacity) and FeNO measurement. Patients will be provided with a peak flow meter for twice daily measurement throughout the study. At 2 weeks, a clinical assessment and spirometry will be performed to confirm eligibility, and patients will complete four validated questionnaires to assess quality of life, asthma control, and asthma symptoms, including a visual analog scale for bother from asthma symptoms. Eligible patients will then be stratified by baseline FeNO level (normal ≤25, intermediate >25 to ≤50, or high >50 ppb); each group will be randomised to receive beclometasone 400 mcg daily or placebo for 6 weeks. An optional blood sample will be collected from consenting patients to assess blood eosinophils.
At visit 3, final assessments will include spirometry, FeNO measurement, and all questionnaires. Interaction analysis will be used to determine whether a differential effect exists in response to ICS between FeNO groups.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||360 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)|
|Official Title:||The Evaluation of FeNO for Predicting Response to an Inhaled Corticosteroid in Subjects With Non-specific Respiratory Symptoms|
|Actual Study Start Date :||May 2014|
|Actual Primary Completion Date :||August 2016|
|Actual Study Completion Date :||August 2016|
4 weeks of corticosteroid treatment with QVAR (100mcg), 400 mcg daily; two puffs twice daily
Drug: Qvar (100 mcg)
2 puffs twice daily; 400 mcg daily over 4 weeks treatment period
Other Name: Beclomethasone diproprionate
No Intervention: Placebo
Blinded placebo inhaler
- Asthma Control Questionnaire (ACQ) [ Time Frame: Baseline and 4 weeks ]The Asthma control questionnaire (ACQ) is a seven question (i.e. the top scoring 5 symptoms, daily rescue bronchodilator use and FEV1% pred.), validated tool for assessing asthma control. Patients are asked to recall how their asthma has been during the last 7 days and to evaluate their asthma against 5 symptom questions and a rescue bronchodilator use question on a 6-point scale (0 = no impairment, 6 = maximum impairment). In addition, the research nurse will grade the FEV1 % predicted on a 6 point scale (0 to 6). The questions are equally weighted and ACQ7 score is the mean of the 7 questions, generating a value between 0 (totally controlled) and 6 (severely uncontrolled).
- EuroQol 5 dimension questionnaire [ Time Frame: Baseline and 4 weeks ]The EQ-5D-3L questionnaire is a validated instrument that derives a person's health profile. The EQ-5D-3L consists of two parts. The first one is the EQ descriptive system which comprises the following 5 dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. The respondent is asked to indicate their health state by ticking the most appropriate statement (no problems to extreme problems). The second part is the EQ visual analog scale (EQ VAS). It records the respondent's self-rated health on a 20 cm vertical,visual analogue scale with endpoints labelled "the best health you can imagine" and "the worst health you can imagine".
- Visual Analogue Scale test (VAS) and cough Visual analogue scale test [ Time Frame: Baseline and 4 weeks ]Patients rate their symptom/cough severity by placing a mark on a line to indicate symptom severity.
- Spirometry (PEF, FEV1, FVC, FEV1/FVC) [ Time Frame: 3 days ]Spirometry will be conducted to obtain an objective measure of the patient's lung function
- Eosinophil analysis [ Time Frame: 1 day ]A blood test will be taken from consenting patients to assess the eosinophil level as marker for inflammation.
- Peak expiratory flow (PEF diary) [ Time Frame: From visit 1 till 6 weeks follow-up (2 recordings per day over 6 weeks) ]Peak expiratory flow will be measured using a portable peak flow meter.
- Global Evaluation of Treatment Effectiveness Scale (GETE) [ Time Frame: 1 day ]Clinical judgment on whether the treatment was successful on a 5-point scale
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02294279
|Research in Real Life Ltd|
|Oakington, Cambridgeshire, United Kingdom, CB24 3BA|
|Study Director:||David Price, Prof||Research in Real Life|