Late Breaking Abstract - Predictive value of FeNO in patients with non-specific respiratory symptoms: a randomised controlled trial

Background: Fractional exhaled nitric oxide (FeNO) can predict treatment response in asthma, but little is known of its utility in patients with non-specific respiratory symptoms (NSRS). Aims and objectives: To evaluate the association between baseline FeNO and response to treatment with inhaled corticosteroids (ICS) in patients with NSRS. Methods: This was a multi-centre randomised, placebo-controlled trial, carried out in UK and Singapore. It consisted of a 2-week assessment period to establish baseline measurements and a 4-week treatment period with either extrafine ICS (200 µ beclomethasone bid) or placebo. NIOX VERO (Circassia) was used to measure baseline FeNO. The primary endpoint wa…