E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Respiratory Tract Diseases [C08] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10003553 |
E.1.2 | Term | Asthma |
E.1.2 | System Organ Class | 10038738 - Respiratory, thoracic and mediastinal disorders |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
1. To assess the ability of tezepelumab 210 mg subcutaneous (SC) to reduce prescribed OCS dose (≤ 5 mg/day) without loss of asthma control in adult participants with OCS-dependent asthma. |
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E.2.2 | Secondary objectives of the trial |
1. To assess the ability of tezepelumab 210 mg SC to prevent asthma exacerbations in adult participants with OCS-dependent asthma while OCS dose reduction. 2. To assess the ability of tezepelumab 210mg SC to allow reduction of the prescribed OCS dose without loss of asthma control. 3. To assess the ability of tezepelumab to improve lung function. 4. To assess the ability of tezepelumab to improve asthma control. 5. To assess the ability of tezepelumab to improve asthma related quality of life. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Main inclusion criteria: • Age 18-80 years. • Documented physician diagnosed asthma requiring continuous treatment with high-dose ICS plus a LABA for at least 6 months prior to Visit 1. The ICS and LABA can be contained within a combination product or given by separate inhalers. • Documented long-term OCS therapy for asthma, equivalent to a daily dose of at least 5 mg and up to 40 mg of prednisone/prednisolone for at least 3 continuous months directly preceding Visit 1. • Participant should be on a stable OCS dose for at least 4 weeks prior to Visit 1. • Documented history of at least 1 asthma exacerbation event within 12 months prior to Visit 1.
Other inclusion criteria per protocol apply. |
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E.4 | Principal exclusion criteria |
Main exclusion criteria: • Pulmonary disease or systemic diseases, other than asthma associated with elevated peripheral EOS counts. • Any disorder or major physical impairment that is not stable and could affect the safety of the participant throughout the study, influence the findings of the study or the interpretation, or impede the participant's ability to complete the entire duration of study. • History of cancer. • History of a clinically significant infection requiring treatment with antibiotics or antiviral medications finalised < 2 weeks before Visit 1. • A helminth parasitic infection diagnosed within 6 months prior to Visit 1 that has not been treated with, or has failed to respond to, standard of care therapy. • Current smokers or participants with smoking history ≥ 10 pack-years and participants using vaping products, including electronic cigarettes. • History of chronic alcohol or drug abuse within 12 months prior to Visit 1. • Tuberculosis requiring treatment within the 12 months prior to Visit 1. • History of known immunodeficiency disorder including a positive HIV test at Visit 1. • Major surgery within 8 weeks prior to Visit 1 or planned surgical procedures requiring general anaesthesia or inpatient status for > 1 day during the conduct of the study. • Coexistent inflammatory conditions for which long-term OCS doses are part of their maintenance treatment. • Receipt of any marketed or investigational biologic agent within 4 months or 5 half-lives (whichever is longer) prior to Visit 1 or receipt of any investigational nonbiologic agent within 30 days or 5 half-lives (whichever is longest) prior to Visit 1. Participants enrolled in current or previous tezepelumab studies will not be included. • Concurrent enrolment in another clinical study involving an IP. • Treatment with systemic immunosuppressive/immunomodulating drugs, except for OCS used in the treatment of asthma/asthma exacerbations, within the last 12 weeks or 5 half-lives (whichever is longer) prior to Visit 1. • History of anaphylaxis or documented immune complex disease (Type III hypersensitivity reactions) following any biologic therapy. • Positive hepatitis B surface antigen, or hepatitis C virus antibody serology at screening, or a positive medical history for hepatitis B or C. • Pregnant, breastfeeding, or lactating women.
Other exclusion criteria per protocol apply. |
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E.5 End points |
E.5.1 | Primary end point(s) |
• Proportion of participants who discontinued OCS without loss of asthma control at Week 28 and Week 52 • Proportion of participants who reduced daily prescribed maintenance OCS dose to ≤ 5 mg/day without loss of asthma control at Week 28 and Week 52 |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
• Week 28 and Week 52 • Week 28 and Week 52 |
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E.5.2 | Secondary end point(s) |
1. • The AAER over 28 weeks and over 52 weeks • Rate of asthma exacerbation associated with hospitalisation or emergency room (ER) visit over 28 weeks and over 52 weeks • Rate of asthma exacerbation associated with hospitalisation over 28 weeks and over 52 weeks • Proportion of participants who did not experience an exacerbation over 28 weeks and over 52 weeks • Proportion of participants who did not experience an exacerbation associated with hospitalisation or ER visit over 28 weeks and 52 weeks • Proportion of participants who did not experience an exacerbation associated with hospitalisation over 28 weeks and over 52 weeks 2. • Proportion of participants with ≥ 50% reduction from baseline in daily maintenance OCS dose at Week 28 and Week 52 • Categorised percent reduction from baseline in the daily maintenance OCS dose (categories: ≥ 90% to ≤ 100% reduction, ≥ 75% to < 90% reduction, ≥ 50% to < 75% reduction, > 0% to < 50% reduction, no change or any increase) at Week 28 and Week 52 • Absolute and percent change from baseline in daily maintenance OCS dose at Week 28 and Week 52 3. • Change from baseline in post-bronchodilator (post-BD) FEV1 at Week 28 and Week 52 4. • Change from baseline in Asthma Control Questionnaire 6 (ACQ-6) at Week 28 and Week 52 5. • Change from baseline in standardised Asthma Quality of Life Questionnaire for 12 years and older (AQLQ[s]+12) total score at Week 28 and Week 52 • Change from baseline in St. George’s Respiratory Questionnaire (SGRQ) total score at Week 28 and Week 52 |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
All at Week 28 and Week 52 |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 1 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 5 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 69 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Argentina |
Mexico |
Puerto Rico |
United States |
France |
Latvia |
Lithuania |
Poland |
Bulgaria |
Spain |
Germany |
Italy |
Belgium |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The end of the study is defined as the date of the last scheduled contact for the last participant in the study globally. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 5 |
E.8.9.1 | In the Member State concerned days | 4 |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 5 |
E.8.9.2 | In all countries concerned by the trial days | 4 |