A phase 1 randomized, double blind single-dose study to evaluate the PK and immunogenicity of single SC 100 and 150 mg doses of mavrilimumab in healthy adult Japanese subjects.

This is a Phase 1, randomized, double-blind, placebo-controlled, parallel group, single-dose study to evaluate the PK, immunogenicity, and safety of mavrilimumab at doses of 100 and 150 mg in healthy adult Japanese subjects. The study will be conducted at one site in Europe and subjects will be randomized in a 5:5:2 ratio to 100, 150mg mavrilimumab and placebo.

Inclusion Criteria:

• Subject is of Japanese ethnicity
• No evidence of clinically significant respiratory disease

Exclusion Criteria:

• Any condition that, would interfere with the evaluation of the study drug or safety of subjects.
• Subject has a known hypersensitivity to any components of the investigational product.
• History of infection requiring hospitalization or treatment with IV antibiotics within 12 weeks before screening, or evidence of clinically significant active infection.
• Subject has a history or present condition of malignancy.
• Subject has a history or presence of drug addiction (urine test) or has alcohol consumption (breath test) of more than 21 (males) or 14 (females) units of alcohol per week.
• Any blood donation or significant loss of blood within 56 days of study initiation,
• Receipt of live (attenuated) vaccine within the 4 weeks before screening or during the study.