RT Journal Article SR Electronic T1 Derivation of a prototype asthma attack risk scale centred on blood eosinophils and exhaled nitric oxide JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 199 OP 202 DO 10.1136/thoraxjnl-2021-217325 VO 77 IS 2 A1 Simon Couillard A1 Annette Laugerud A1 Maisha Jabeen A1 Sanjay Ramakrishnan A1 James Melhorn A1 Timothy Hinks A1 Ian Pavord YR 2022 UL http://thorax.bmj.com/content/77/2/199.abstract AB Reduction of the risk of asthma attacks is a major goal of current asthma management. We propose to derive a risk scale predicting asthma attacks based on the blood eosinophil count and exhaled nitric oxide (FeNO). Biomarker-stratified trial-level attack rates were extracted and pooled from the control arms of the Novel START, CAPTAIN, QUEST, Benralizumab Phase 2b, PATHWAY, STRATOS 1–2 and DREAM trials (n=3051). These were used to derive rate ratios and the predicted asthma attack rate for different patient groups. The resultant prototype risk scale shows potential to predict asthma attacks, which may be prevented by anti-inflammatory treatment.