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SoMOSA: Study of mechanisms of action of omalizumab in severe asthma

A study identifying which biomarkers are predictive of a good clinical response following treatment with Xolair in patients with severe asthma

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN15124178
Enrollment
220
Registered
2016-09-06
Start date
2015-10-01
Completion date
Unknown
Last updated
2018-02-19

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

Conditions

Topic: Respiratory disorders

Interventions

All participants will be treated with Xolair 75mg – 600mg as a subcutaneous injection (as per the SmPC guidelines) for a treatment period of 52 weeks. Dosing will be in line with the approved dosing t

Sponsors

Southampton University Hospitals NHS Trust
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Aged 18-70 years 2. Severe uncontrolled asthma (GINA step 4 and 5) despite daily treatment with high-dose inhaled corticosteroids (ICS) and long-acting beta agonists (LABA). (High-dose ICS will be a minimum twice daily dose of 800 mcg of beclomethasone dipropionate equivalent inhaler for at least 8 weeks before screening). Potential participants will need to fulfil the criteria for uncontrolled asthma as judged by their Asthma Control Questionnaire (ACQ) score =1.5 during the screening period. 3. Participants on maintenance treatment with oral corticosteroids will also be included and will also have to meet the same ACQ inclusion criterion (ACQ=1.5) 4. Atopic, as identified by positive skin prick test or in vitro reactivity to a perennial aeroallergen 5. Two or more documented severe asthma exacerbations within the previous 12 months that require courses of prednisolone, defined as increased asthma symptoms requiring treatment in the community or in hospital with systemic corticosteroid rescue therapy or an increase in daily oral corticosteroids for participants already on maintenance oral corticosteroids for >2 months 6. Frequent daytime symptoms or night-time awakenings 7. Reduced lung function (FEV1 <80%) recorded anytime within the past 2 years 8. IgE level of 30 to 1500 IU/mL 9. Body weight less than 150 kg 10. Able to give written informed consent prior to participation in the study, which includes ability to comply with the requirements and restrictions listed in the consent form 11. Able to read, comprehend, and write at a sufficient level to complete study related materials

Exclusion criteria

Exclusion criteria: 1.An exacerbation requiring treatment with systemic corticosteroids (or an increase in the baseline dose of OCS) within the 30 days before screening 2. Active lung disease other than asthma 3. Treatment with Xolair or another biologic in the 12 months before screening 4. Elevated serum IgE levels for reasons other than allergy (for example, parasite infections, the hyperimmunoglobulin E syndrome, the Wiskott–Aldrich syndrome, or bronchopulmonary aspergillosis) 5. The following medication is not allowed during the run-in and treatment period and should not have been taken for at least 3 months prior to screening: methotrexate, cyclosporine, intravenous immunoglobulin or immunosuppressant’s 6. Current smokeror having smoked in the past year. Ex-smokers will have to be confirmed by a negative cotinine test. If there is a history of smoking for >10 pack years, then asthma diagnosis should have been made before the age of 40 and objective evidence of reversibility of FEV1>12% and 200ml should be available [either previously recorded or done as part of screening for this study]. Potential participants where an asthma/COPD overlap is suspected should not be included. 7. The participant has a history of current recreational drug use or other allergy, which, in the opinion of the responsible physician, contra-indicates their participation 8. Female patient who is pregnant or lactating or up to 6 weeks post partum or 6 weeks cessation of breast feeding 9. Those participants who, in the opinion of the investigator, have a risk of non-compliance with study procedures 10. The participant has a recent history of incapacitating psychiatric disorders 11. History or current evidence of an upper or lower respiratory infection or symptoms (including common cold) within 4 weeks of baseline assessments (in such participant assessments should be deferred until after 4 weeks have lapsed from the cold)

Design outcomes

Primary

MeasureTime frame
Concentration of (PGD2) 2,3-dinor-11-ß-PGF2a in urine is measured at baseline and 16 weeks.

Secondary

MeasureTime frame
Clinical response to Xolair assessed by GETE at 16 weeks.

Countries

United Kingdom

Contacts

Public ContactJess Rajaram
somosa@soton.ac.uk+44 23 8120 3833

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026