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Understanding the role of neutrophil enzymes in a type of asthma with low inflammation

Characterising neutrophil serine protease activity in type 2 low asthma

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ISRCTN
Registry ID
ISRCTN18205231
Enrollment
120
Registered
2026-04-28
Start date
2026-07-18
Completion date
Unknown
Last updated
2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Type 2 inflammatory asthma Respiratory

Interventions

This is an observational study, which means it will not be testing a new drug or treatment. Instead, the study will carefully study people with asthma to better understand what is happening in their l

Sponsors

Asthma + Lung UK
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 100 Years

Inclusion criteria

Inclusion criteria: 1. Patients aged =18 years old with GINA-defined moderate-to-severe asthma. 2. Taking a medium to high dose of ICS/LABA OR high dose ICS with another second line controller (BDP equivalent dose of =800µg) of step 4/5 GINA therapy. 3. Established diagnosis of persistent asthma =6 months according to GINA guidelines. 4. Ability to give informed consent. 5. Agreement for their GP to be made aware of study participation and to receive feedback as relevant to the participant’s wellbeing. 6. Able to understand the study procedures and the risks involved. 7. Good physical and mental status, determined on the basis of the medical history and a general clinical examination at screening.

Exclusion criteria

Exclusion criteria: 1. Patients who are taking biologics for asthma. 2. Patients who are on maintenance oral corticosteroids. 3. Patients who have required a course of oral corticosteroids in the past month. 4. Any other respiratory diseases such as COPD and moderate to severe bronchiectasis which in the opinion of the investigator are clinically significant and may have an impact on the study outcomes. 5. Any disorder that is not stable in the opinion of the Investigator. 6. Patients unable or unwilling to consent. 7. Anyone who has had a recent chest infection or asthma exacerbation (within the past 4 weeks), as this may temporarily alter neutrophil levels in the sputum. 8. People currently taking part in another clinical trial involving investigational medicines or who have received such medicines within the past 3 months. 9. Individuals with severe comorbidities (such as uncontrolled heart disease, active cancer, or significant immunosuppression) where participation may pose additional risk.

Countries

Scotland, United Kingdom

Contacts

Public ContactRory Chan
r.chan@dundee.ac.uk+44 01382383920

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 11, 2026