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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT01691508
Registration number
NCT01691508
Ethics application status
Date submitted
20/09/2012
Date registered
24/09/2012
Titles & IDs
Public title
Mepolizumab Steroid-Sparing Study in Subjects With Severe Refractory Asthma
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Scientific title
MEA115575: A Randomised, Double-Blind, Placebo-Controlled, Parallel-Group, Multicenter Study of Mepolizumab Adjunctive Therapy to Reduce Steroid Use in Subjects With Severe Refractory Asthma
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Secondary ID [1]
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115575
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Asthma
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Condition category
Condition code
Respiratory
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Asthma
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Drugs - Mepolizumab
Treatment: Drugs - Placebo
Treatment: Drugs - OCS (prednisone/prednisolone)
Experimental: Mepolizumab - Mepolizumab 100 mg subcutaneous once every 4 weeks upto Week 20
Experimental: Placebo - Placebo subcutaneous once every 4 weeks upto Week 20
Treatment: Drugs: Mepolizumab
Mepolizumab is a fully humanised Immunoglobulin G antibody (IgG1, kappa) with human heavy and light chain frameworks.
Treatment: Drugs: Placebo
Will be available as an equivalent volume of 0.9% sodium chloride.
Treatment: Drugs: OCS (prednisone/prednisolone)
Oral Corticosteroid (prednisone/prednisolone)
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Intervention code [1]
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Treatment: Drugs
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Number of Participants With the Indicated Percent Reduction From Baseline in Oral Corticosteroid (OCS) Dose During Weeks 20 to 24 While Maintaining Asthma Control
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Assessment method [1]
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Baseline (BL) dose was the prescribed optimized prednisone/prednisolone dose following the OCS Optimization Phase. Maintenance (MN) dose was the mean of all daily prednisone/prednisolone doses during the MN Phase (weeks 20 to 24). The percent reduction of OCS dose during weeks 20 to 24 compared to BL dose was calculated as: 100 x (BL dose minus MN dose)/BL dose. Asthma control between weeks 20 and 24 was defined as no clinically significant exacerbation (worsening of asthma that required use of systemic corticosteroids or hospitalization and/or emergency department visits) during this period. The percent reduction of OCS was categorized as: 90 to 100%; 75 to \<90%; 50 to \<75%; \>0 to \<50%; no decrease in prednisone dose, or lack of asthma control, or withdrawal (WD) from treatment. Analysis was performed using a proportional odds model with terms for treatment group, region, duration of OCS use at BL (\<5 years vs. \>=5 years) and BL OCS dose.
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Timepoint [1]
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Baseline; Weeks 20 to 24
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Secondary outcome [1]
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Number of Participants Who Achieved a Reduction of >=50% in Their Daily Oral Corticosteroid (OCS) Dose Compared With Baseline Dose, During Weeks 20 to 24 While Maintaining Asthma Control
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Assessment method [1]
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Baseline (BL) dose was the prescribed optimized prednisone/prednisolone dose following the OCS Optimization Phase. Maintenance (MN) dose was the mean of all daily prednisone/prednisolone doses during the MN Phase (weeks 20 to 24). The percent reduction of OCS dose during weeks 20 to 24 compared to BL dose was calculated as: 100 x (BL dose minus MN dose)/BL dose. Asthma control between weeks 20 and 24 was defined as no clinically significant exacerbation (worsening of asthma that required use of systemic corticosteroids or hospitalization and/or emergency department visits) during this period. Analysis was performed using a binary logistic regression model with terms for treatment group, region, duration of OCS use at BL (\<5 years vs. \>=5 years) and BL OCS dose.
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Timepoint [1]
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Baseline; Weeks 20 to 24
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Secondary outcome [2]
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Number of Participants Who Achieved a Reduction of Their Daily OCS Dose to <=5.0 mg During Weeks 20 to 24 While Maintaining Asthma Control
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Assessment method [2]
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Maintenance (MN) dose was the mean of all daily prednisone/prednisolone doses during the MN Phase (weeks 20 to 24). Asthma control between weeks 20 and 24 was defined as no clinically significant exacerbation (worsening of asthma that required use of systemic corticosteroids or hospitalization and/or emergency department visits) during this period. Number of participants who achieved a reduction of their daily OCS dose to \<=5.0 mg was based on the value of the MN dose. Analysis was performed using a binary logistic regression model with terms for treatment group, region, duration of OCS use at BL (\<5 years vs. \>=5 years) and BL OCS dose.
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Timepoint [2]
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Weeks 20 to 24
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Secondary outcome [3]
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Number of Participants Who Achieved a Total Reduction of OCS Dose During Weeks 20 to 24 While Maintaining Asthma Control
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Assessment method [3]
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MN dose was the mean of all daily prednisone/prednisolone doses during the MN Phase (weeks 20 to 24). Asthma control between weeks 20 and 24 was defined as no clinically significant exacerbation (worsening of asthma that required use of systemic corticosteroids or hospitalization and/or emergency department visits) during this period. The number of participants who achieved a total reduction of OCS dose was based on the value of the MN dose. Total reduction implied no OCS use during the entire MN phase. Analysis was performed using a binary logistic regression model with terms for treatment group, region, duration of OCS use at BL (\<5 years vs. \>=5 years) and BL OCS dose.
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Timepoint [3]
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Weeks 20 to 24
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Secondary outcome [4]
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Median Percentage Change From Baseline in Daily OCS Dose During Weeks 20 to 24 While Maintaining Asthma Control
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Assessment method [4]
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BL dose was the prescribed optimized prednisone/prednisolone dose following the OCS Optimization Phase. MN dose was the mean of all daily prednisone/prednisolone doses during the MN Phase (weeks 20 to 24). The percent change of OCS dose during weeks 20 to 24 compared to BL dose was calculated as: 100 x (MN dose minus BL dose)/BL dose. Asthma control between weeks 20 and 24 was defined as no clinically significant exacerbation (worsening of asthma that required use of systemic corticosteroids or hospitalization and/or emergency department visits) during this period. For participants who withdrew from the study prior to the Maintenance Phase, and for participants with a lack of asthma control during the Maintenance Phase, a value equal to the minimum percent reduction in OCS use across all subjects was imputed for the analysis.
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Timepoint [4]
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Baseline; Weeks 20 to 24
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Eligibility
Key inclusion criteria
* Informed Consent and Study Compliance: Subjects must be able to give written informed consent prior to participation in the study, which will include the ability to comply with the requirements and restrictions listed in the consent form.
* Systemic Corticosteroids: Requirement for regular treatment with maintenance systemic corticosteroids in the 6 months prior to Visit 1 and using a stable oral corticosteroid dose for 4 weeks prior to Visit 1. Subjects must be taking 5.0 to 35 mg/day of prednisone or equivalent at Visit 1 and must agree to switch to study required prednisone/prednisolone as their oral corticosteroid and use it per protocol for the duration of the study.
* Inhaled Corticosteroids: Requirement for regular treatment with high dose inhaled corticosteroid in the 6 months prior to Visit 1. For 18 years of age and older: inhaled corticosteroid (ICS) dose must be >=880 microgram (µg)/day fluticasone propionate (FP) (ex-actuator) or equivalent daily. For ICS/ long acting beta2 agonist (LABA) combination preparations, the highest approved maintenance dose in the local country will meet this ICS criterion. For ages 12 to 17: ICS dose must be >=440 µg/day FP (ex-actuator) or equivalent daily.
* Controller Medication: Current treatment with an additional controller medication for at least 3 months OR documentation of having used and failed an additional controller medication for at least 3 successive months during the prior 12 months [e.g., LABA, leukotriene receptor antagonist (LTRA), or theophylline].
* Eosinophilic Asthma: Prior documentation of eosinophilic asthma or high likelihood of eosinophilic asthma.
* FEV1: Persistent airflow obstruction as indicated by a pre-bronchodilator FEV1 <80% predicted.
* Asthma: Evidence of asthma indicated by airway reversibility, hyperresponsiveness or airway variability.
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Minimum age
12
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Smoking history: Current smokers or former smokers with a smoking history of >=10 pack years.
* Concurrent Respiratory Disease: Presence of a clinically important lung condition other than asthma.
* Malignancy: A current malignancy or previous history of cancer in remission for less than 12 months prior screening
* Liver Disease: Unstable liver disease
* Cardiovascular: Subjects who have severe or clinically significant cardiovascular disease uncontrolled with standard treatment.
* Other Concurrent Medical Conditions: Subjects who have known, pre-existing, clinically significant endocrine, autoimmune, metabolic, neurological, renal, gastrointestinal, hepatic, haematological or any other system abnormalities that are uncontrolled with standard treatment.
* Eosinophilic Diseases: Subjects with other conditions that could lead to elevated eosinophils such as Hypereosiniophilic Syndromes, including Churg-Strauss Syndrome, or Eosinophilic Esophaghitis. Subjects with a known, pre-existing parasitic infestation within 6 months prior to Visit 1 are also to be excluded.
* ECG: ECG assessment QTcF >=450 milliseconds (msec) or QTcF >= 480 msec for subjects with Bundle Branch Block.
* Immunodeficiency: A known immunodeficiency (e.g. human immunodeficiency virus - HIV), other than that explained by the use of corticosteroids taken as therapy for asthma.
* Omalizumab Use: Subjects who have received omalizumab [Xolair] within 130 days of Visit 1.
* Other Monoclonal Antibodies: Subjects who have received any monoclonal antibody (other than Xolair) to treat inflammatory disease within 5 half-lives of Visit 1.
* Investigational Medications: Subjects who have received treatment with an investigational drug within the past 30 days or five terminal phase half-lives of the drug whichever is longer, prior to Visit 1 (this also includes investigational formulations of marketed products).
* Hypersensitivity: Subjects with a known allergy or intolerance to a monoclonal antibody or biologic.
* Pregnancy: Subjects who are pregnant or breastfeeding. Patients should not be enrolled if they plan to become pregnant during the time of study participation.
* Alcohol/Substance Abuse: A history (or suspected history) of alcohol misuse or substance abuse within 2 years prior to Visit 1.
* Adherence: Subjects who have known evidence of lack of adherence to controller medications and/or ability to follow physician's recommendations.
* Previous participation: Subjects who have previously any study of mepolizumab and received Investigational Product.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people analysing the results/data
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 3
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/10/2012
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/12/2013
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Sample size
Target
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Accrual to date
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Final
135
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Recruitment in Australia
Recruitment state(s)
NSW,SA,VIC,WA
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Recruitment hospital [1]
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GSK Investigational Site - New Lambton
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GSK Investigational Site - Bedford Park
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GSK Investigational Site - Parkville
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GSK Investigational Site - Nedlands
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Recruitment postcode(s) [1]
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2305 - New Lambton
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Recruitment postcode(s) [2]
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5042 - Bedford Park
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3050 - Parkville
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Recruitment postcode(s) [4]
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6009 - Nedlands
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Recruitment outside Australia
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United States of America
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California
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Colorado
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Brno
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Olomouc
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Praha 4
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Gières
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Montpellier cedex 5
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Nantes cedex 1
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Lodz
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Newcastle upon Tyne
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Southampton
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
GlaxoSmithKline
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Ethics approval
Ethics application status
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Summary
Brief summary
This is a randomised, double-blind, placebo-controlled, parallel-group, multicenter study of mepolizumab in comparison with placebo in reducing Oral Corticosteroid (OCS) use in subjects with severe refractory asthma. The study consists of four phases, OCS Optimisation Phase (Week -8 to Week 0), and the double-blind treatment period divided into an Induction Phase (Week 0 to Week 4), OCS Reduction Phase (Week 5 upto Week 20) followed by Maintenance Phase (Week 20 to Week 24). During the Optimisation Phase the investigator will adjust the OCS (prednisone/prednisolone) dose according to the Optimisation titration schedule based on a review of Asthma Control Questionnaire (ACQ)-5 score and exacerbation. In the Induction Phase subjects will be randomized 1:1 (approximately 60 per arm) to receive either mepolizumab (100 mg) administered subcutaneously (SC) or placebo every 4 weeks in addition to their existing maintenance asthma therapy with the lowest dose of OCS from Optimisation Phase. The Induction Phase will allow sufficient time for those subjects randomised to the mepolizumab arm to achieve a decrease in the eosinophilic inflammation prior to the reduction in OCS. During the Reduction Phase, subjects will continue receiving 100 mg mepolizumab/placebo every 4 weeks and the OCS dose reduction will be done every 4 weeks using the reduction titration schedule based on a review of eDiary parameters recorded by the subject, the subjects' exacerbation history, and a review of the signs and symptoms of adrenal insufficiency. In the Maintenance Phase subjects will be maintained without any further OCS dose adjustment. Subjects who complete the 24 week double-blind period and meet the eligibility criteria, will be offered the opportunity to participate in an open label extension (OLE) study otherwise they will return for a Follow-up Visit 12 weeks after their last dose of double blind study treatment. At each clinic visit, adverse events, safety labs, spirometery parameters and exacerbations will be assessed. The pharmacokinetic samples will be collected in the beginning of the treatment, prior to last dose, at the end of study (exit visit) and the follow up.
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Trial website
https://clinicaltrials.gov/study/NCT01691508
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Trial related presentations / publications
Casale TB, Burnette A, Bourdin A, Howarth P, Hahn B, Stach-Klysh A, Khurana S. Oral corticosteroid-sparing effects of mepolizumab in severe eosinophilic asthma: evidence from randomized controlled trials and real-world studies. Ther Adv Respir Dis. 2022 Jan-Dec;16:17534666221107313. doi: 10.1177/17534666221107313. Khurana S, Brusselle GG, Bel EH, FitzGerald JM, Masoli M, Korn S, Kato M, Albers FC, Bradford ES, Gilson MJ, Price RG, Humbert M. Long-term Safety and Clinical Benefit of Mepolizumab in Patients With the Most Severe Eosinophilic Asthma: The COSMEX Study. Clin Ther. 2019 Oct;41(10):2041-2056.e5. doi: 10.1016/j.clinthera.2019.07.007. Epub 2019 Aug 22. Yancey SW, Bradford ES, Keene ON. Disease burden and efficacy of mepolizumab in patients with severe asthma and blood eosinophil counts of >/=150-300 cells/muL. Respir Med. 2019 May;151:139-141. doi: 10.1016/j.rmed.2019.04.008. Epub 2019 Apr 8. Ortega HG, Meyer E, Brusselle G, Asano K, Prazma CM, Albers FC, Mallett SA, Yancey SW, Gleich GJ. Update on immunogenicity in severe asthma: Experience with mepolizumab. J Allergy Clin Immunol Pract. 2019 Sep-Oct;7(7):2469-2475.e1. doi: 10.1016/j.jaip.2019.03.042. Epub 2019 Apr 5. No abstract available. Keene ON. Strategies for composite estimands in confirmatory clinical trials: Examples from trials in nasal polyps and steroid reduction. Pharm Stat. 2019 Jan;18(1):78-84. doi: 10.1002/pst.1909. Epub 2018 Oct 29. Magnan A, Bourdin A, Prazma CM, Albers FC, Price RG, Yancey SW, Ortega H. Treatment response with mepolizumab in severe eosinophilic asthma patients with previous omalizumab treatment. Allergy. 2016 Sep;71(9):1335-44. doi: 10.1111/all.12914. Epub 2016 May 24. Bel EH, Wenzel SE, Thompson PJ, Prazma CM, Keene ON, Yancey SW, Ortega HG, Pavord ID; SIRIUS Investigators. Oral glucocorticoid-sparing effect of mepolizumab in eosinophilic asthma. N Engl J Med. 2014 Sep 25;371(13):1189-97. doi: 10.1056/NEJMoa1403291. Epub 2014 Sep 8.
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Public notes
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Contacts
Principal investigator
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GSK Clinical Trials
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Address
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GlaxoSmithKline
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
Yes
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What data in particular will be shared?
Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.
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When will data be available (start and end dates)?
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Available to whom?
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Available for what types of analyses?
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How or where can data be obtained?
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results are available at
https://clinicaltrials.gov/study/NCT01691508