Evidence map›Paper›PMID 33298582›Full record

ArticleThorax2021

Characterisation of patients with severe asthma in the UK Severe Asthma Registry in the biologic era.

David J Jackson, John Busby, Paul E Pfeffer, Andrew Menzies-Gow, Thomas Brown, Robin Gore, Martin Doherty, Adel H Mansur, Simon Message, Robert Niven and 3 more

Registry-linked trialOpen access · hybridAbstract readMulticenter Study
In one paragraph

Article in Thorax, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06364527 (Use of Aptar Digital Health's Respiratory Disease Management Platform for Asthma), which is not on this map. Cited by 78 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 1 pooled it
10.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT06364527 nacompletednot on this mapstarted 2024, after this paper: background citation

Use of Aptar Digital Health's Respiratory Disease Management Platform for Asthma: A Pilot Study

TypeinterventionalSponsorCoheroHealthRan2024 to 2026Enrolled94ConditionsAsthma ChronicArmsAptar Digital Health respiratory disease management platform
3 · Its place in the literature

Who cites it

78 citing papers in PubMed, 1 synthesis or guideline pooled it, 150 citations in OpenAlex.

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  20. Biologic Prescription Patterns and Biomarker Determinants of First-Line Dupilumab in Danish Adult Patients With Severe Asthma and Comorbid Atopic Dermatitis.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2025
    Article

18 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 11 institutions in 4 countries.

David J JacksonGuy's Severe Asthma Centre, Guy's and St Thomas' NHS Foundation Trust, UK.
John BusbyCentre for Public Health, Queen's University Belfast School of Medicine, Dentistry and Biomedical Sciences, UK.
Paul E PfefferRespiratory Medicine, Barts Health NHS Trust, London, UK.ORCID 0000-0003-0369-2885
Andrew Menzies-GowLung Division, Royal Brompton and Harefield NHS Foundation Trust, London, UK.
Thomas BrownRespiratory Medicine, Portsmouth Hospitals NHS Trust, Portsmouth, UK.
Robin GoreRespiratory Medicine, Cambridge University Hospitals Trust, Cambridge, UK.
Martin DohertyRespiratory Medicine, Russells Hall Hospital, Dudley, UK.
Adel H MansurHeartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UK.ORCID 0000-0002-8615-8778
Simon MessageRespiratory Medicine, Gloucestershore Royal Hospital, Gluocester, UK.
Robert NivenWythenshawe Hospital, Manchester NHS Foundation Trust, UK.
Mitesh PatelRespiratory Medicine, University Plymouth NHS Trust, Plymouth, UK.
Liam G HeaneyCentre for Experimental Medicine, Queen's University Belfast School of Medicine, Dentistry and Biomedical Sciences, UK l.heaney@qub.ac.uk.
UK Severe Asthma Registry
Queen's University Belfast · GBBarts Health NHS Trust · GBCambridge University Hospitals NHS Foundation Trust · GBHeart of England NHS Foundation Trust · GBKing's College London · GBManchester University NHS Foundation Trust · GBPortsmouth Hospitals NHS Trust · GBRespiratory Clinical Trials · AURoyal Brompton & Harefield NHS Foundation Trust · GBRussells Hall Hospital · GBUniversity of Ulster · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe UK Severe Asthma Registry (UKSAR) is the world's largest national severe asthma registry collecting standardised data on referrals to UK specialist services. Novel biologic therapies have transformed the management of type 2(T2)-high severe asthma but have highlighted unmet need in patients with persisting symptoms despite suppression of T2-cytokine pathways with corticosteroids.

methodsDemographic, clinical and treatments characteristics for patients meeting European Respiratory Society / American Thoracic Society severe asthma criteria were examined for 2225 patients attending 15 specialist severe asthma centres. We assessed differences in biomarker low patients (fractional exhaled nitric oxide (FeNO) <25 ppb, blood eosinophils <150/μL) compared with a biomarker high population (FeNO ≥25 ppb, blood eosinophils ≥150/µL).

resultsAge (mean 49.6 (14.3) y), age of asthma onset (24.2 (19.1) y) and female predominance (62.4%) were consistent with prior severe asthma cohorts. Poor symptom control (Asthma Control Questionnaire-6: 2.9 (1.4)) with high exacerbation rate (4 (IQR: 2, 7)) were common despite high-dose treatment (51.7% on maintenance oral corticosteroids (mOCS)). 68.9% were prescribed biologic therapies including mepolizumab (50.3%), benralizumab (26.1%) and omalizumab (22.6%). T2-low patients had higher body mass index (32.1 vs 30.2, p<0.001), depression/anxiety prevalence (12.3% vs 7.6%, p=0.04) and mOCS use (57.9% vs 42.1%, p<0.001). Many T2-low asthmatics had evidence of a historically elevated blood eosinophil count (0.35 (0.13, 0.60)).

conclusionsThe UKSAR describes the characteristics of a large cohort of asthmatics referred to UK specialist severe asthma services. It offers the prospect of providing novel insights across a range of research areas and highlights substantial unmet need with poor asthma control, impaired lung function and high exacerbation rates. T2-high phenotypes predominate with significant differences apparent from T2-low patients. However, T2-low patients frequently have prior blood eosinophilia consistent with possible excessive corticosteroid exposure.

Indexed as

RegistriesSocieties, MedicalAdolescentAdultAgedAged, 80 and overAsthmaFemaleHumansMaleMiddle AgedMorbiditySeverity of Illness IndexUnited KingdomYoung Adultasthma epidemiology

Identifiers

PMID33298582
PMCPMC7892381
OpenAlexW3093535691

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.