A Pragmatic Study to Investigate the Efficacy and Safety of Mepolizumab in Severe Uncontrolled Asthma in Brazil
试验速览
- 阶段
- 4 期
- 入组人数
- 18
- 试验地点
- 1
- 主要终点
- Change in total score of Saint George's Respiratory Questionnaire (SGRQ) between Week 0 and Week 48
研究概览
简要总结
The anti-interleukin-5 monoclonal antibody mepolizumab is approved as an add-on therapy in Europe, Canada, USA, and other countries, to standard of care for the treatment of patients with severe eosinophilic asthma. Mepolizumab has been shown to reduce exacerbation rates and dependency on oral corticosteroid use in clinical trials in patients with severe eosinophilic asthma compared with placebo, both in addition to standard of care. Other trials had also showed that treatment with mepolizumab resulted in significant improvements in quality of life (SGRQ) and asthma control (ACQ-5 score) . Mepolizumab has only recently been approved in Brazil. There is still no data regarding its efficacy and safety in the Brazilian population and it is important to emphasize that no Brazilian center participated in the previous large, international and multicentric phase III mepolizumab studies. Therefore, it is crucial to perform a local study in order to validate external results in the Brazilian population.
详细描述
Severe asthma is associated with substantial morbidity, mortality, health-care costs, and impaired quality of life. Recurrent asthma exacerbations are a major problem in some patients and can predominate in a subgroup with eosinophilic airway inflammation. Mepolizumab is a humanised monoclonal antibody against interleukin 5 that effectively inhibits eosinophilic airway inflammation.
The anti-interleukin-5 monoclonal antibody mepolizumab is approved as an add-on therapy in Europe, Canada, USA, and other countries, to standard of care for the treatment of patients with severe eosinophilic asthma. Mepolizumab has been shown to reduce exacerbation rates and dependency on oral corticosteroid use in clinical trials in patients with severe eosinophilic asthma compared with placebo, both in addition to standard of care. Other trials had also showed that treatment with mepolizumab resulted in significant improvements in quality of life (SGRQ) and asthma control (ACQ-5 score).
Mepolizumab has only recently been approved in Brazil. There is still no data regarding its efficacy and safety in the Brazilian population and it is important to emphasize that no Brazilian center participated in the previous large, international and multicentric phase III mepolizumab studies. Therefore, it is crucial to perform a local study in order to validate external results in the Brazilian population.
Our group belongs to a public academic institution with a focus on assistance, teaching and research. It is a tertiary-referral hospital with an outpatient clinic specializing severe asthma patients. In 2012, the investigators published the first study with the clinical characterization of their cohort of severe asthma and its respective phenotypes. Since then, the investigators have carried out several studies in order to identify prognostic factors and interventions that could improve the control and quality of life of this population. Among them, there are the impact of weight control in asthma symptoms, evaluation of standardized and systematic protocol based on high doses of inhaled corticosteroid plus LABA and 2 weeks course of oral corticosteroids and pathophysiological studies based on bronchial biopsy samples from patients with severe asthma. Since obesity is a serious and prevalent problem in several severe asthma cohorts, another area of interest of the group is to assess the impact of physical activity on this population. Finally, it is important to mention the commitment of the group to evaluate the incorporation of new treatments in the severe asthma population within the Brazilian scenario as done in a specific publication to systematically evaluate the use of omalizumab in our center.
Therefore, the investigators consider that our center has full capacity to conduct a systematic evaluation study of the use of mepolizumab in the population of severe asthma. The investigators aimed to examine the effects of mepolizumab on quality of life, lung function, asthma symptoms and exacerbation rate in patients with severe eosinophilic asthma in a tertiary reference center in Brazil based on real world data.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •18 years or older with severe eosinophilic asthma
- •Regular use of high-dose inhaled corticosteroids plus other controller medicines
- •Non-controlled asthma characterized by ACQ-5 > 1.5 OR chronic oral corticosteroids asthmatic patients (Prednisone 5mg or more for at least 3 months) even if ACQ-5 < 1.5
- •History of at least one exacerbation requiring treatment with systemic corticosteroids in the previous 12 months before screening OR chronic oral corticosteroids asthmatic patients (Prednisone 5mg or more for at least 3 months) even without exacerbations
- •Blood eosinophil count of at least 300 cells per μL within the 12 months before screening OR a blood eosinophil count of at least 150 cells per μL at screening
排除标准
- •Current smokers or former smokers with a history of at least ten pack-years
- •Individuals with a concurrent respiratory disease
- •Those who had received omalizumab within 30 days before screening
- •Patients with severe or clinically significant cardiovascular disease, or other eosinophilic diseases.
- •Patients with asthma exacerbation 4 weeks before screening for the study
- •Patients with parasitic infection in the 6 months before study entry.
- •Patients with substantial uncontrolled comorbidity, possibility of pregnancy
- •Patients with history of poor treatment adherence
研究组 & 干预措施
Mepolizumab
Mepolizumab 100mg, SC, every 4 weeks
干预措施: Mepolizumab 100 MG [Nucala] (Drug)
结局指标
主要结局
Change in total score of Saint George's Respiratory Questionnaire (SGRQ) between Week 0 and Week 48
时间窗: 48 weeks
This scales varies from 0 to 100. Higher values means worse quality of life.
次要结局
- Change in the number of clinically significant exacerbations of asthma as defined by: worsening of asthma which requires use of systemic corticosteroids* and/or hospitalisation and/or Emergency Department (ED) visits.(48 weeks)
- Change in lung function (Forced expiratory volume in first second - FEV1)(48 weeks)
- Change of asthma control measured by Asthma control questionnaire (ACQ) 5(48 weeks)
- Safety measured by the number of adverse events(48 weeks)
- Change of asthma control measured by Asthma Control Test (ACT)(48 weeks)