Asthma Clinical Trial
Official title:
How to "Choosebetweenamab" for Severe Asthma, Comparing Treatment With Mepolizumab and Omalizumab for Patients With Severe Allergic and Eosinophilic Asthma.
Mepolizumab is an anti-interleukin-5 ( IL-5) monoclonal antibody that neutralizes IL-5 and
reduces eosinophil counts in both sputum and blood. Omalizumab is an anti-immunoglobulin E
(IgE) monoclonal antibody (mAb) used in the treatment of severe allergic eosinophilic asthma
The investigators propose that in patients with the dual phenotypes of severe allergic and
eosinophilic asthma, that Mepolizumab is as effective as Omalizumab. However, this trial will
also identify key clinical biomarkers that will clarify which patients will respond best to
each of these interventions.
This study will be the first direct clinical comparison of these agents and will apply expert
clinical characterization, along with cutting edge biotechnology to better inform treatment
choices for severe asthma. This is an important and urgent management problem facing the
Australian pharmaceutical scheme, where imprecision in prescribing will result in reduced
clinical effectiveness as well as substantial and sustained costs.
Status | Recruiting |
Enrollment | 200 |
Est. completion date | December 2022 |
Est. primary completion date | June 2022 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 12 Years to 85 Years |
Eligibility |
Inclusion Criteria: - Participants must have a duration of asthma of greater than one year. - They must have confirmed asthma defined as: (i) forced expiratory volume (FEV1) reversibility greater than or equal to 12%, and greater than or equal to 200 mL at baseline within 30 minutes after administration of salbutamol (200 to 400 micrograms), or (ii) airway hyperresponsiveness defined as a greater than 20% decline in FEV1 during a direct bronchial provocation test or greater than 15% decline during an indirect bronchial provocation test, or (iii) peak expiratory flow (PEF) variability of greater than 15% between the two highest and two lowest peak expiratory flow rates during 14 days. - They must have evidence of poor asthma control despite optimal ICS and long acting beta agonist (LABA), be treated by a respiratory physician or immunologist, and have demonstrated acceptable adherence and inhaler technique. Poor control is defined as: evidence of an FEV1 <80% of predicted in the last year on at least one occasion; treatment with OCS, either daily for at least 6 weeks, or a cumulative dose of OCS of at least 500 mg prednisolone equivalent in the previous 12 months, unless contraindicated or not tolerated. - In addition they must demonstrate an: (a) an Asthma Control Questionnaire (ACQ-5)38 score of at least 2.0, as assessed in the previous month, and (b) while receiving optimised asthma therapy in the past 12 months, experienced at least 1 admission to hospital for a severe asthma exacerbation, or 1 severe asthma exacerbation, requiring documented use of OCS initiated or increased for at least 3 days, or parenteral corticosteroids prescribed/supervised by a physician. - They must also demonstrate evidence of a dual allergic/ eosinophilic phenotype. This is defined as: a total serum IgE >30IU/mL, past or current evidence of atopy documented by skin prick testing or radioallergosorbent assay, and the participant must have a blood eosinophil count greater than or equal to 300 cells per microlitre in the last 6 weeks. Exclusion Criteria: - Do not fulfil inclusion criteria - Unable to attend appointments - Significant psychiatric illness |
Country | Name | City | State |
---|---|---|---|
Australia | John Hunter Hospital | New Lambton | New South Wales |
Lead Sponsor | Collaborator |
---|---|
University of Newcastle, Australia | GlaxoSmithKline |
Australia,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | ACQ5 | The primary outcome will be Asthma control questionairre (ACQ)5, adjusted for baseline ACQ5 | Assessed after 6 months treatment | |
Secondary | Exacerbations | Number of Exacerbations, requiring change in oral corticosteroids, with either a course of prednisone for at least 3 days, or in those on regular OCS an increase in dose of at least 50% for at least 3 days. Patient reported monthly | every month up to 6 months after treatment commenced | |
Secondary | Time to first exacerbation reported, by patient or health provider | Time to first exacerbation reported, by patient or health provider | every month up to 6 months after treatment commenced | |
Secondary | Hospital admissions | Number of admissions to hospital patient reported | every month up to 6 months after treatment commenced | |
Secondary | Oral corticosteroids | Reduction in dose of regular OCS, confirmed by health care provider and patient reported | every month up to 6 months after treatment commenced | |
Secondary | Spirometry | Change in spirometry, FEV1., measured at time treatment commences and 6 months after treatment | every month up to 6 months after treatment commenced | |
Secondary | Continuing treatment | Proportion continuing on Australian PBS treatment (successful treatment). The number at the conclusion of the 6 months that will continue treatment. reported by health provider | 6 months post intervention | |
Secondary | Adverse events | Adverse events; i.e. injection site reaction, reported. Headaches, reported, rash, reported, allergic reaction, reported. Any other relevant adverse event report. Patient and health care provider reported | every month up to 6 months after treatment commenced | |
Secondary | Emergency department presentation | Number of emergency department presentations, patient and health care provider reported | every month up to 6 months after treatment commenced | |
Secondary | Overall dose of oral corticosteroids | Overall dose of systemic corticosteroids used during the 6 months after treatment commences. Patients and health care provided | 6 months post intervention | |
Secondary | Change in gene expression measured by single cell RNA sequencing of peripheral blood cells (ISS 11066) | ISS 11066 is a substudy of Choosebetweenamab using transcriptomic single cell sequencing of patient white blood cells from both treatment groups at baseline. The data generated from this will be compared to the above clinical outcomes at all follow-up time points. Single cell gene expression and cell type cluster patterning delineated through bioinformatic data processing will be inputted with clinical outcomes into a GLM to identify baseline predictors (gene and cell type) of treatment effect | Measured prior to treatment and clinical outcomes at 6 months after treatment |
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