Study to Evaluate the Efficacy and Safety of Tezepelumab in Reducing Oral Corticosteroid Use in Adults With Oral Corticosteroid Dependent Asthma



Status:Recruiting
Conditions:Asthma
Therapuetic Areas:Pulmonary / Respiratory Diseases
Healthy:No
Age Range:18 - 80
Updated:4/4/2019
Start Date:March 5, 2018
End Date:November 26, 2020
Contact:AstraZeneca Clinical Study Information Center
Email:information.center@astrazeneca.com
Phone:1-877-240-9479

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A Multicentre, Randomized, Double-Blind, Placebo Controlled, Phase 3 Study to Evaluate the Efficacy and Safety of Tezepelumab in Reducing Oral Corticosteroid Use in Adults With Oral Corticosteroid Dependent Asthma (SOURCE)

Phase 3 Study to Evaluate the Efficacy and Safety of Tezepelumab in Reducing Oral
Corticosteroid Use in Adults with Oral Corticosteroid Dependent Asthma

A Multicentre, Randomized, Double-Blind, Placebo Controlled, Phase 3 Study to Evaluate the
Efficacy and Safety of Tezepelumab in Reducing Oral Corticosteroid Use in Adults with Oral
Corticosteroid Dependent Asthma

Inclusion Criteria:

1. Subjects must have received a physician-prescribed medium- or high-dose ICS as per
GINA guideline for at least 12 months

2. Subjects must have received physician prescribed LABA and high dose ICS (total daily
dose >500μg fluticasone propionate dry powder formulation equivalent) for at least 3
months. The ICS and LABA can be parts of a combination product, or given by separate
inhalers.

3. Additional maintenance asthma controller medications are allowed according to standard
practice of care i.e., leukotriene receptor antagonists (LTRAs), theophylline,
long-acting muscarinic antagonists (LAMAs), secondary ICS and cromones. The use of
these medications must be documented for at least 3 months

4. Subjects must have received OCS for the treatment of asthma for at least 6 months
prior to screening and on a stable dose of between ≥ 7.5 to ≤ 30mg (prednisone or
prednisolone equivalent) daily or daily equivalent for at least 1 month. The OCS dose
may be administered every other day (or different doses every other day); Average dose
over two days = The daily dose.

5. Morning pre-bronchodilator (BD) FEV1 must be < 80% predicted normal

6. Subjects must have evidence of asthma as documented by post-BD
(albuterol/salbutatomol) reversibility of FEV1 ≥12% and ≥200 mL (15-30 min after
administration of 4 puffs of albuterol/salbutamol), documented either in the previous
12 months

7. Subjects must have a history of at least 1 asthma exacerbation event within 12 months

8. Minimum 10 days compliance with the morning and evening eDiary completion and
OCS,ICS,LABA as well as other asthma controller medications as captured in the eDiary
during the 14 days prior to randomization

9. Documented physician-diagnosed asthma for at least 12 months

Exclusion Criteria:

1. Any clinically important pulmonary disease other than asthma (e.g. active lung
infection, Chronic Obstructive Pulmonary Disease (COPD), bronchiectasis, pulmonary
fibrosis, cystic fibrosis, hypoventilation syndrome associated with obesity, lung
cancer, alpha 1 anti-trypsin deficiency, and primary ciliary dyskinesia) or ever
diagnosed with pulmonary or systemic disease, other than asthma, that are associated
with elevated peripheral eosinophil counts (e.g. allergic bronchopulmonary
aspergillosis/mycosis, Churg-Strauss syndrome, hypereosinophilic syndrome).

2. Any disorder, including, but not limited to, cardiovascular, gastrointestinal,
hepatic, renal, neurological, musculoskeletal, infectious, endocrine, metabolic,
hematological, psychiatric, or major physical impairment that is not stable in the
opinion of the Investigator and could:

Affect the safety of the subject throughout the study Influence the findings of the
study or the interpretation Impede the subject's ability to complete the entire
duration of study

3. History of cancer: Subjects who have had basal cell carcinoma, localized squamous cell
carcinoma of the skin or in situ carcinoma of the cervix are eligible to participate
in the study provided that curative therapy was completed at least 12 months prior to
visit 1.Subjects who have had other malignancies are eligible provided that curative
therapy was completed at least 5 years

4. A helminth parasitic infection diagnosed within 6 months prior to screening that has
not been treated with, or has failed to respond to, standard of care therapy.

5. Current smokers or subjects with smoking history ≥ 10 pack-years and subjects using
vaping products, including electronic cigarettes. Former smokers with a smoking
history of <10 pack years and users of vaping or e-cigarette products must have
stopped for at least 6 months prior to visit 1 to be eligible.

6. History of chronic alcohol or drug abuse within 12 months

7. Tuberculosis requiring treatment within the 12 months

8. History of any known immunodeficiency disorder including a positive human
immunodeficiency virus (HIV) test.

9. Major surgery within 8 weeks prior to visit 1 or planned surgical procedures requiring
general anaesthesia or in-subject status for >1 day during the conduct of the study.

10. Clinically significant asthma exacerbation, in the opinion of the Investigator,
including those requiring use of systemic corticosteroids or increase in the
maintenance dose of OCS within 30 days
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