A Study of BBT002 in Healthy Volunteers (HVs) and in Adult Patients With Chronic Obstructive Pulmonary Disease (COPD) or Chronic Rhiosininusitis With Nasal Polyps (CRSwNP)

Inclusion criteria

• Parts A, B, C, D, E, F, and G)
• Age 18-65 years for HVs (Parts A, B, and E); age 35-80 years for patients with COPD (Parts C and F,); age 18-80 for patients with CRSwNP (Parts D and G)
• Body mass index between 18.0-32.0 kg/m square, capped weight at 120kg, for HVs (Parts A, B, and E); body mass index between 16.0-35.0 kg/m square, capped weight at 125kg for patients (Parts C, D, F, and G)
• Negative pregnancy tests for women of childbearing potential
• Willingness to refrain from alcohol consumption for 24 hours prior to each study visit
• Non-smokers, healthy current smokers (≤5 cigarettes/day), or ex-smokers
• Adequate contraception use (for men and women of childbearing potential)
• No clinically significant abnormalities or history of relevant diseases
• Key Inclusion Criteria (Part C and F only) 1. Documented history of COPD with a post-bronchodilator Forced Expiratory Volume in 1 second/Forced Vital Capacity less than 0.70
• Key Inclusion Criteria (Parts D and G)
• \. Participants with confirmed diagnosis of CRSwNP
• Key

Exclusion criteria

• for (Parts A, B, C, D, E, F, and G)
• Positive viral serology for human immunodeficiency virus (HlV), hepatitis C virus (HCV), or hepatitis B (HBV)
• Immunodeficiencies, autoimmune diseases, or cancer, history of conditions predisposing to infections
• History of major metabolic, dermatological, liver, kidney, hematological or other significant disorders
• Clinically relevant abnormal lab results, including low blood counts, liver enzymes, or abnormal kidney function
• Positive drug/alcohol tests or abnormal vital signs at screening or Day -1
• Abnormal Electrocardiogram(ECG) findings
• History of drug/alcohol abuse in the past 2 years
• History of severe allergic reactions or hypersensitivity
• Key Exclusion Criteria (Part C and F only)
• Current diagnosis of other significant pulmonary disease
• Significant or unstable cardiovascular diseases
• Recent clinically significant infection
• Inability to perform spirometry
• Key Exclusion Criteria (Parts D and G)
• Steroid refractoriness: Refractory to systemic corticosteriods for CRSwNP
• Sinonasal surgery (recent/extensiv)
• Consitions interfering with nasal assessments
• Excluded sinonasal/systemic diseases