This study will follow a randomized, multiple-dose, double-blind, placebo-controlled, sequential dose-escalation study design. The study will consist of five subcutaneous (SC) cohorts and one intravenous (IV) cohort. Each dose cohort is planned to enroll 8 participants, randomized such that 6 participants will receive tezepelumab and 2 will receive placebo (3:1 ratio).
The primary objective is to evaluate the safety, tolerability, and immunogenicity of multiple-dose administration of tezepelumab in healthy adults.