Small Airway Function of Fluticasone/Formoterol (Flutiform®) and Fluticasone/Salmeterol

Study Overview
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Brief Summary
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The purpose of this study is to demonstrate superiority of Fluticasone/Formoterol (Flutiform®) to Fluticasone/salmeterol based on the small airway function by assessing the Impulse Oscillometic System (IOS) in uncontrolled asthma patients requiring ICS/LABA concomitant treatment.

Official Title
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A Single-blind, Randomized, Active-controlled, Multi-center and Phase IV Study to Evaluate the Small Airway Parameters of Fluticasone/Formoterol (Flutiform®) Compared to Fluticasone/Salmeterol in Asthma Patients

Conditions
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Asthma

Intervention / Treatment
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* Drug: Fluticasone/Formoterol
* Drug: Fluticasone/Salmeterol


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adult (over 19 years) asthma patients Patients who have a history of mild-to-moderate-severe, persistent asthma for at least 6 months prior to Screening. Patients who were required to demonstrate a FEV1 of ≥ 40 % and ≤ 85% of predicted normal values during screening period following appropriate withholding of asthma medications (if applicable). Patients who were required to show reversibility of ≥15% FEV1 after salbutamol inhalation (2 actuations, 100µg per actuation) from the pre- salbutamol value at screening Patients who have uncontrolled asthma by Seretide® 250/50 defined as ACT less than 20 Patients who showed R5-20 more than 0.1 kPa/L/s Blood eosinophil count > 300/µL on screening visit Female patients of childbearing potential must have a negative urine pregnancy test at Screening. Patients who are able to use the inhaler Patients who is willing to voluntarily sign the study consent form Exclusion Criteria: Patients who have experienced life-threatening asthma within 12 months prior to screening or respiratory infection within 4 weeks prior to screening, or patients who have experienced any emergency visit or hospitalization due to acute asthma symptoms within 4 weeks prior to screening Patients who have diagnosed as clinically significant disease or non- reversible pulmonary disease or patients who currently have active pulmonary disease (eg. COPD, cystic fibrosis, bronchiectasis, active tuberculosis) Patients who have diagnosed as laryngitis, chronic sinusitis, infectious rhinitis or allergic rhinitis within 4 weeks prior to screening, or patients who have had any symptoms of acute exacerbation or purulent discharge by the disease above within 2 weeks prior to screening Current smoker or past smoker defined as below: Current smoker: smoking history within 12 months prior to screening Past smoker: smoking amount ≥10 pack year* Pack year (PY) calculation: average amount of smoking per day (pack) x duration of smoking (year) Patients who currently are pregnant or lactating Patient who had taken systemic corticosteroid within 4 weeks prior to screening Patients who had taken omalizumab within 24 weeks prior to screening Patients who had taken the following medications within 1 week prior to screening: potent CYP3A inhibitors β-blockers monoamine oxidase inhibitor TCA (tricyclic antidepressants) quinidine-type anti arrhythmic Leukotriene anatagonist Astemizole Patients who are participating or going to participate in any interventional clinical trials QT interval prolongation in ECG result at screening Patients with hypersensitive to investigational products or to any component of the drug Patients who are judged difficult to participate in this investigation by the investigator

Ages Eligible for Study
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Minimum Age: 19 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Fluticasone/Formoterol<br>Brand name: Flutiform Dose: 250/10μg (2 puffs/once, BID) Duration of treatment: 12 weeks Mode of administration: oral inhalation | Drug: Fluticasone/Formoterol<br> <br> * Other names: Flutiform;|
| Active Comparator: Fluticasone/Salmeterol<br>Brand name: Seretide Dose: 250/50μg (2 puffs/once, BID) Duration of treatment: 12 weeks Mode of administration: oral inhalation | Drug: Fluticasone/Salmeterol<br> <br> * Other names: Seretide;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Efficacy superiority as measured by Impulse Oscillometric System | To compare Fluticasone/Formoterol to Fluticasone/salmeterol, assessing the change in the mean R5-R20 measured by the Impulse Oscillometic System (IOS) in uncontrolled asthma patients | 12 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of adverse drug reactions as a measure of safety |  | 12 weeks |