Recombinant Human IL-4 Receptor Used in Treatment of Asthma
- Conditions
- Asthma
- Interventions
- Biological: Recombinant human soluble IL-4 receptorBiological: Placebo for Recombinant human soluble IL-4 receptor
- Registration Number
- NCT00017693
- Brief Summary
The purpose is to measure the effectiveness of recombinant human interleukin-4 receptor (IL-4R) in treating asthma.
Asthma can be caused by the allergic response from breathing in certain irritants. Interleukin 4 (IL-4), which is naturally produced by the body, plays a major role in this allergic response. Doctors feel that IL-4 activity may be stopped by giving IL-4R, a product that binds to IL-4, and thereby decrease the problems of asthma.
- Detailed Description
A major factor in the pathogenesis of asthma is the development of an allergic inflammatory response to inhaled antigens. Interleukin-4 (IL-4) plays a key role in this response. Binding and inactivating the IL-4 molecule with IL-4R may diminish the allergic asthmatic response by inhibiting activities of IL-4.
Patients are randomized to 1 of 3 treatment groups and, within each group, are stratified by baseline FEV1 cohort. Patients receive either dose level 1 of IL-4R, dose level 2 of IL-4R, or placebo, by aerosol drug delivery device, once a week for 12 weeks. There are frequent clinic visits and several follow-up visits. Physical exams and spirometry are done regularly; immunizations are administered on Day 28; and a skin tests panel is given on Day 84. Blood samples are collected at study visits during treatment and follow-up to test for immunology/serology parameters, chemistry profiles, and asthma-related DNA polymorphisms. Patients are provided with peak flow meters and must demonstrate their proper use so that a peak expiratory flow (PEF) diary and a symptoms diary can be maintained. Selected sites measure exhaled nitric oxide and collect induced sputum samples. Assessments for adverse events are conducted at 16 and 40 weeks following the first study drug treatment.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 62
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description 3.0mg rsIL-4R Recombinant human soluble IL-4 receptor Recombinant human soluble IL-4 receptor (rsIL-4R) given by means of inhalation once weekly for 12 weeks. The study drug was administered in the clinic at a final volume of 2.5 mL in sterile normal saline solution with a breath-assisted Pari LC Star nebulizer powered by a Proneb Turbo portable compressor. 1.5mg rsIL-4R Recombinant human soluble IL-4 receptor Recombinant human soluble IL-4 receptor (rsIL-4R) given by means of inhalation once weekly for 12 weeks. The study drug was administered in the clinic at a final volume of 2.5 mL in sterile normal saline solution with a breath-assisted Pari LC Star nebulizer powered by a Proneb Turbo portable compressor. Placebo for rsIL-4R Placebo for Recombinant human soluble IL-4 receptor The placebo for recombinant human soluble IL-4 receptor (rsIL-4R) consisted of identically prepared excipient in the same volume (2.5 mL). To maintain blinding, medication was dispensed by an individual who was not responsible for patient care or assessment. Treatment assignment was blinded to all personnel involved in direct conduct or monitoring of the study. 0.75mg rsIL-4R Recombinant human soluble IL-4 receptor Recombinant human soluble IL-4 receptor (rsIL-4R) given by means of inhalation once weekly for 12 weeks. The study drug was administered in the clinic at a final volume of 2.5 mL in sterile normal saline solution with a breath-assisted Pari LC Star nebulizer powered by a Proneb Turbo portable compressor.
- Primary Outcome Measures
Name Time Method Change from baseline in Forced expiratory volume in 1 second (FEV1) 3 months
- Secondary Outcome Measures
Name Time Method