T2 low asthma and obesity
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - Age 18-75 years - BMI = 30 kg/m2 - Confirmed asthma diagnoses (12% reversibility in FEV1 or PD20 0,75 - FEV = 70% of predicted - No exacerbation in past 3 months
Exclusion criteria
Exclusion criteria: - Not a full understanding of the Dutch language. - A liaison with the coordinating or principal investigator, which could possibly influence the decision to participate in this study voluntarily (in concordance with the WMO – article 5) - Systematic use of oral, nasal or topical corticosteroids - Use of immune suppressive drugs, such as biologicals/monoclonal antibodies, calcineurine inhibitors, mTOR inhibitors and IMDH inhibitors. - Other diseases which could influence pulmonary function and/or the immune system such as: -- A possible infection of the upper- or lower respiratory tract 6 weeks prior to the start of the study; -- Active malignancy -- Prior pulmonary malignancy -- COPD diagnosis -- Current pregnancy -- Pregnancy -- ‘Active smoking’ or ‘stopped smoking but >10 Pack Years’
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| asthma control (geen klinisch significante stijging van de ACQ (= 0.5 punten) voor 4 dagen tijdens/na tapering) | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. To determine predictive factors for successful ICS withdrawal. 2. To determine the effect of ICS withdrawal on determents of Metabolic Syndrome using physical examination (such as weight an blood pressure), blood- and hair tests (e.g. endocrine markers of metabolic syndrome and steroid levels) 3. To describe the effect of ICS on inflammatory biomarkers (e.g. proteomics and genomics) and physical parameters (e.g. lung function) in T2-low asthma. 4. To detect whether the T2-low status changes over time and during an exacerbation (i.e. detecting T2-hidden or false negative patients) 5. To further complement T2-phenotyping using exhaled molecular compounds analyses (i.e. electronic nose or eNose) which gives inside in potential early biomarkers for low steroid efficacy. | — |
Contacts
Franciscus Gasthuis en Vlietland