Tezepelumab Home Use Study

This is a multicenter, randomized, open-label, parallel-group study designed to assess healthcare provider and subject/caregiver reported functionality and performance of a single-use accessorized pre-filled syringe (APFS) or autoinjector (AI) with a fixed 210 mg dose of tezepelumab administered subcutaneously in the clinic and in an at-home setting.

The study will consist of a screening/run-in period of up to 2 weeks and a treatment period of 24 weeks, followed by a post-treatment follow-up period of 12 weeks. During the treatment period, one dose of 210 mg tezepelumab will be administered via a single-use APFS or AI subcutaneously (SC) every 4 weeks (Q4W) starting at Visit 2 (Week 0) until Visit 7 (Week 20). Subjects will be administered tezepelumab at the site during Visits 2 (Week 0), 3 (Week 4), 4 (Week 8) and 7 (Week 20). At-home administration of tezepelumab will occur during Visit 5 (Week 12) and Visit 6 (Week 16). Each device will be assessed separately using descriptive presentations.

Eligibility Criteria:
Inclusion Criteria:

* Male or female, age 12 to 80 years.
* Documented physician-diagnosed asthma for at least 12 months.
* Evidence of asthma as documented by post BD (albuterol/salbutamol) reversibility of FEV1 ≥ 12% AND ≥200 mL (15-60 min after administration of 4 puffs of albuterol/salbutamol), documented either: in the previous 12 months prior to V1, OR demonstrated at V1, V1A, or at V2.
* Documented history of current treatment with medium- or high-dose ICS for at least 6 months and at least one additional asthma controller medication according to standard practice of care. ICS dose must be greater than or equal to 500 μg/day fluticasone propionate dry powder formulation or equivalent daily.
* Morning pre-BD FEV1 of \>50% predicted normal at Visit 1, Visit 1A, or Visit 2.

Exclusion Criteria:

* Clinically important pulmonary or systemic diseases other than asthma.
* History of cancer except basal cell carcinoma, squamous cell carcinoma, or in situ carcinoma of the cervix within 12 months prior to Visit 1.
* Acute upper or lower respiratory infection requiring antibiotics or antiviral medications finalized \<2 weeks before Visit 1 or during screening/run-in period.
* A helminth parasitic infection diagnosed within 6 months that is untreated or is unresponsive to the standard of care.
* Smoking history of ≥10 pack years, (includes vaping and e-cigarettes)
* History of chronic alcohol or drug abuse.
* Tuberculosis requiring treatment within 12 months prior to V1.
* History of HIV, Hepatitis B or Hepatitis C.
* 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 non-biologic agent within 30 days or 5 half-lives.
* Bronchial thermoplasty in 24 months prior to V1.
* Anaphylaxis or documented immune complex disease (Type III hypersensitivity reactions) to any biologic therapy.
* Evidence of active liver disease (e.g. jaundice, AST, ALT or ALP \>2 times upper limit of normal), ongoing liver disease or inexplicably elevated liver chemistry values.
* Pregnant, breastfeeding or lactating women.
* Non-leukocyte depleted whole blood transfusion in 120 days prior to visit 1.